Question # 1

If n(A) = n then n(P(A)) is

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2n

n²

n/2

2ⁿ

An event having more than one sample point is called

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Certain event

Compound event

Simple event

None

Equation of parabola with focus F(-3,1) directrix x=3 is

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(y -1)2 =-12x

(y-1)2 =4x

(x+3)2 =4a(y-1)

y2 =-12(x-1)

The surface generated by lines, consists of two parts, called:

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vertex

apex

nappes

axis

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The middle term of the expansion (1 + 2x)⁶is ______

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1st term

4th term

2nd term

5th term

Φset is the ______ of all sets?

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Subset

Union

Universal

Intersection

y=0 of the parabola y² = 4ax is the

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equation of directirx

Equatio of the tangent

Equation of axis

equation of latus rectum

The expansion of (1 + 2x)^-2is valed if

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| x | < 1/2

| x | < 1

| x | < 2

| x | < 3

A square matrix all of whose elements except the main diagonal are zeros is called a

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Null matrix

Singular matrix

Symmetric matrix

Diagonal matrix

The line through the intersection of the lines x+ 2y+ 3= 0 : 3x +4y +7 =0 and making equal intercepts on the axes is

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x+ y+ 1= 0

x+ y- 2= 0

x+ y+ 2= 0

2x +y +2 =0

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The value of sin²20° + sin²70° is equal to

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1

2

-1

1/2

The modulus of 12-5i is:

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7

13

√7

119

The standard form of the quadratic function f(x) = -x² +4x+2, is

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(x-2)²+6

-(x-2)² + 6

(x-3)²+5

(x+4)²-7

The no of term is the expansion of (a+x)n-1 is

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n+1

n-1

n

n-2

3j . k x i

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0

1

3

9

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1

-1

Which element is the additive inverse of (a,b) in Complex numbers

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(a,0)

(0,b)

(a,b)

(-a,-b)

x = 0 is in the solution of the inequality

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x > 0

3x + 4 < 0

x + 3 < 0

x - 2 < 0

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Which of the following represents a vector

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(x, y)

The negative square root of 9 can be written as:

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-√9

√9

√18

-√18

Name the property used in 4.1 + (-4.1) = 0

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Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

If a plane passes through the vertex of a cone then the intersection is

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an ellipse

a hyperbola

a point circle

a parabola

Rank of matrix [1 3 5 0] is

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1

3

2

4

Sin 270° = ______

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-1

0

1

Undefined

The constant distance of all points of the circle from its centre is called the

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radius of the circle

secant of the circle

chord of the circle

diameter of the circle

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Two sets A and B are said to be disjoint if

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none of these

Which element is the additive inverse of (a, b) in Complex numbers?

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(a, 0)

(0, b)

(a, b)

(-a, -b)

E-radius corresponding to < C is

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A die is rolled. What is the probability that the dots on the top are greater than 4?

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1/4

1/2

1/3

1/33

Cos (α+β) - cos (α-β) =

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-2 sinα sinβ

2 sinαcosβ

-2 sinαcosα

4 sinα cosβ

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all

In the expansion of (a + x)ⁿthe sum of exponents of a and x in each term of the expansion is

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n + 1

n - 1

n

2n

Three consecutive terms of a progression are 30, 24, 20. The next terms of the progression is

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If a₁and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is

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0

a₁r^n-1

a₁rⁿ⁺¹

a₁rⁿ

Which conjunction is not true ?

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1

-1

For what value of k, 3x -2y+ k= 0 is tangent to the circle x2 +y2 +6x -4y =0

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k=0

k=0 or 26

k = 26

k=-13

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General solution of 1 + cos x = 0 is

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A line segment whose end points lie on a circle is called

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The secant of the circle

The arc of the circle

The chord of the circle

The circumference of the circle

Range of cosec x is ______

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{-1, 1}

R

Negative real numbers

R - { x | - 1 < x < 1}

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

A non-terminating non_recurring decimal represents an

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Irrational no

Both a & c

Rational no

None of these

The point lying on the terminal rat of -270° is

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(1,0)

(0,-1)

(0,1)

(-1,0)

The set of real roots of the equation log_{(5x + 4)}(2x +3)³- log_{(2x + 3)}(10x²+ 23x + 12) = 1 is

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{-1}

{-3/5}

Empty set

{-1/3}

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If ax + bx + c =0 is satisfied by every value of x,then

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b = 0,c = 0

c = 0

b = 0

a = b = c = 0

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-1

0

2

1

Choose an answer

Does not exist because f is unbounded

Is not attained even though f is bounded

Is equal to 1

Is equal to -1

The roots of ax2+bx+c=0 are

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Rational ⇔ b2 -4 ac ≥ 0

Irrational ⇔ b2-4 ac > 0

Real ⇔ b2-4 ac ≠ 0

Rational⇔ b2-4 ac = 0

The roots of ax2 + bx + c = 0 are always unequal if

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b2 - 4ac = 0

b2- 4ac ≠ 0

b2- 4ac > 0

b2- 4ac ≥ 0

Choose an answer

15

15 i

-15 i

-15

Choose an answer

A relation in which the equality is true only for some values of the known is called ______

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An identity

An equation

A polynomial

None of these

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The set { {a,b} } is

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Infinite set

Singleton set

Two points set

Empty set

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an A.P.

a G.P.

a H.P.

None of these

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Multiplicative inverse of "1" is

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+- 1

0

1

None of these

A function F(x) is called even if

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F(x) = F (-x)

F(x) = F(-x)

F(x) = -F(x)

2F(x) = 0

The maximum value of 12 sinθ-9 sin²θis x

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3

4

5

None of these

The solution set of the equation |3x + 2| = 5 is

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Every real number is

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A complex number

A rational number

A natural number

A prime number

sin(a + β)+sin(a -β) =_____;

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2cosa cosβ

2sina cosβ

2cosa sinβ

-2sina sinβ

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

Choose an answer

The mid point of the line segment joining the points A(-8,3) and B(2,-1) is

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(-3,1)

(-6,2)

(5,2)

(-5,2)

A box contains 10 red 30 white and 20 black marbles When a marble is drawn at random the probability that it is either red or white is

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1/6

1/3

1/2

2/3

If the roots of ax²+ bx + c = 0 (a > 0) be greater than unity, then

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a + b + c = 0

a + b + c > 0

a + b + c < 0

None of these

1.4142135... is ______

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A natural number

A rational number

A prime number

An irrational number

General solution of tan 5θ= cot 2θis

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If f(x) = x²-x then f(0) is

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0

1

2

3

The coefficient of xn in the expansion of (1-x)-1 is

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(-1)n2n

1

(-1)n(n+1)

(n+1)

If you are looking a bird in the tree from the ground then the angle formed is called angle of______;

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Elevation

Depression

Right angle

None of these

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2

7

8

12

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0

-4

none of these

For any integer k, wⁿ= ______ when n = 3k

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1

2

0

-4

The study conics, pappus used the method of:

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analytic geometry Euclidean

solid geometry

Greek mathmaticians

None of these

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Two real roots

Two positive roots

Two negative roots

One positive and one negative root

Power set of X i.e P(X)..........under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

The symbol ______ shall be used both for equation and identity

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If 5,7 and 9 are A.Ms between a and b, then a and b is equal to

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2 and 12

1 and 10

3 and 11

-7 and 2

Choose an answer

none of these

Choose an answer

1

0

-2

3

The three noncollinear points through which a circle passe are known, then we can find the:

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Variables x and y

Value of x and c

three constants f,g and c

inverse of the circle

The set of all antiderivaties of f(= ∫f(x)dx) is the

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Definite integral

Indefinite integral

Integral

Area

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1

-1

Sum of all the four forth roots of unity is

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1

-1

i

0

Choose an answer

The square matrix A is skew Hermitian when (A)'=

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A

A'

-A

A

A sequence is a function whose domain is

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N

Subset of N

R

None of these

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1/8

1/2

1/4

1/6

Which reaction yields Bakelite?

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Urea with HCHO

Tetramethyl glycol with Hezamethylene diisocyanate

Phenol and HCHO

Ethylene glycol and Dimethylterephthalate

Which of the following compound is no formed according to octet rule:

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KrF₂

XeF₂

XeO₃

SF₆

A complete chemical Characterization of a compound must include:

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Qualitative analysis

Chemical analysis

Quantitative analysis

None of above

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

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Vertical relationship

Oblique relationship

Diagonal relationship

None

Burning of fossil fuels is the main source of pollution

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Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

Series starting form ₃₉Y to ₄₈CD is in period:

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4th

5th

6th

7th

Choose an answer

RCH(CH₃)CO₂H + CH₃OH

RCH(CH₃)CO₂H + HCO₂H

RCH(CH₃)OH + CO₂

RCH(CH₃)OH + HCO₂H

The number of moles of NH₄CI dissolved in 500 cm³of its 15%, W/N solution is

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1 mole

1.4 mole

2.0 mole

2.4 mole

The reaction of acetaldehyde with HCN followed by hydrolysis gives a product which exhibits

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Metamerism

Tautomerism

Enatiomerism

Geometrical isomerism

The substance which contains the water of crystallization is called

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Hydrated

Solvated

Crystal

None

Optical activity is possible in

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Oxalic acid

Acetic acid

Tartaric acid

Formic acid

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

Automobiles

Essentialα-amino acids are those which are necessary in the diet

Which one is an essentialα-amino acids

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Alanine

Aspartic acid

Glycine

Tryptophan

Alkaline earth metals are usually

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Reducing agent

Oxidizing agent

Amphoteric

Acidic

Which is the longest period of the periodic table

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5th

7th

6th

2nd

Fluted filter paper is used to :

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Decrease rate of filtration.

Increase rate of filtration.

Maintain rate of filtration.

None of above.

Which one of the following pentafluorides cannot be formed?

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PF₅

AsF₅

SbF₅

BiF₅

Ionization is the process in which ionic compounds when fused or dissolved in water split up into charged particles called :

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Atoms.

Electrons.

Protons .

Ions

f-Block elements are also called

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Non typical transition elements

Outer transition elements

Normal transition elements

Inner transition elements

In the ground state of an atom the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

Which of the following is not the reactions of lithium

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The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called,

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Hybridization

Polymerization

Isomerisation

Carbonization

Metals which are above SHE in electrochemical series

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Can liberate H₂from acid

Cannot liberate H₂from acid

Cannot always liberate H₂from acid

None of these

When alkyl is treated with chlorine in the presence of sunlight

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1,3 dichloroproduct is formed

1,4 dichloro product is formed

1,3,5 trichloro product is formed

Only alkyl group is substituted

The process of osmosis was first discovered by

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Nollet

Pfeffer

Traube

Dutrochet

The mass of sulphur which combines with 24 grams oxygen to form SO₂

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32 gram

24 gram

8 gram

12 gram

Which compound shows more hydrogen bonding?

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C₂H₆

C₂H₅Cl

CH₃----O----CH₃

C₂H₅OH

Charge of an electron is:

Choose an answer

1.6 x 10^-19 C

9.1 x 10^-34 C

1.7588 x 10¹¹ C

6.62 x 10^-34 C

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

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Hypophosphorus acid

Orthophosphorus acid

Pyrophosphorus acid

Metaphosphorus acid

Aldehydes is distinguished from ketones by using

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Tollen's reagent

Benedict reagent

Fehling solution

All of the above

Clemensen's reduction of ketones is carried out in

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H₂with Pd catalyst

Glycol with KOH

LiAIH₄in water

Zn-Hg with conc. HCl

In H₂O molecule the bond angle is

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90°

109.5°

107°

104.5°

Estimation of Na in sea water is an example of

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Numerical analysis

Qualitative analysis

Quantitative analysis

None of above

Chemical equilibrium involving reactants and products in more than one phase is called

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Static

Dynamic

Homogeneous

Heterogeneous

The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air from mouth into a solution of K₂Cr₂O₇and H₂SO₄. The colour changes, if the driver is drunk

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From orange to green

From pink to green

From orange to colorless

From pink to colorless

In the chemical combination of sodium and hydrogen to form NaH:

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Hydrogen atom gains an electron.

Sodium atom gains an electron.

Both the atoms share the electron.

Which of the following statement is correct for a chemical reaction to occur molecules of substances must

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Collide with each other

Collide with energy more than activation energy

Collide with energy less than activation energy

Collide with high frequency

K_bvalue of NH₄OH is 1.81 x 10^-5and its conjugate acid has K_a= 5.7 x 10^-10pKb of the base is 4.74, pKa of its conjugate acid is

Choose an answer

-4.74

4.74

10

9.26

Extent to H₂ + L₂à2Hl can be increased by :

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Increasing temperature.

Increasing product.

Increasing pressure.

Adding a catalyst.

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

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2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

Enzymes are chemically

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Carbohydrates

Proteins

Fatty acids

Phospholipids

Soil salinity can be measured by

Choose an answer

Calorimeter

Potometer

Porometer

Conducitvity meter

Polymerization of ethane take place at pressure of 100 atm and a temperature of

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200°C

400°C

600°C

800°C

Which is used as an antifreeze?

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Glycol

Ethyl alcohol

Water

Methanol

Which of the following elements is not stable:

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Xe

Ar.

Kr.

Li.

Which of the following method is most appropriate for the manufacture of methane?

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By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

The monomeric units of starch is/are

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Glucose

Fructose

Glucose and fructose

Mannose

Electrochemical series is a list of element S arranged into the increasing order of their

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Standard oxidation potential

Standard reduction potential

Cell voltage

Ionization potential

Glucose in the presence of zymase is converted into

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Alcohol

Acid

Ethyl alcohol

Ketone

The sample being analyzed is called:

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Electrolyte

Residue

Undue

Filtrate

Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as

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Wurtz reaction

Cannizzaro reaction

Friedel Craft reaction

Claisen reaction

Prevention of corrosion of iron by Zn coating is called

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Galvanization

Cathodic protection

Electrolysis

Photoelectrolysis

Which one of the following is not a buffer

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H₂CO₃+ NaHCO₃solution

H₃PO₄+ NaH₂PO₄solution

Hl + Nal solution

NH₄OH + NH₄CI solution

The three dimensional folding and twisting of a polypeptide chain give rise to

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Primary structure

Secondary structure

Tertiary structure

All of these tertiary

The alkyl halide is converted into an alcohol by

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Addition

Substitution

Dehydrohalogenation

Elimination

Chlorofluorocarbon, CF₂CI₂, plays an effective role in removing O₃(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

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Nitroalkane are used in

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Fuel

Solvents

Organic synthesis

All of them

Due to the bacterial action on wood it is converted into

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Peat

Lignite

Bituminous coal

Anthracite

Oxidation reduction is done by

Choose an answer

Oxidoreductase

Lipases

Lyase

None of these

One calorie is equal to

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5.184 J

3.184 J

4.184 J

7.184 J

Choose an answer

Which statement about the following equilibrium in correct?

2SO_{2 (g)}+ O_2(g)---------------2sO_3(g)H= - 188.3 KJ mol-1

Choose an answer

T value of K_{p falls witha rise in temperate.}

The value of K_{p falls withincreasing pressure}

Adding V_2O₅catalyst increase the equilibrium yield of sulfur trioxide

The value of K_{p is equal to}K_p

The solubility product of Ca(OH)₂is 6.5 x 10^-6. The concentration of OH^-ions is

Choose an answer

1.175 x 10^-2

2.35 x 10^-2

3.25 x 10^-3

3.25 x 10^-4

1 erg of energy corresponds to

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6.02 x 10²³J/mol

6.02 x 10¹⁶J/mol

1 erg/mol

10^-7J/mol

Which structure shows a tertiary alcohol

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CH₃CH₂OH

(CH₃)₂CHOH

(CH₃)₃COH

CH₂OH

In the periodic table, the element with atomic number 16 will be placed in the group

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Fourteen

Sixteen

Thirteen

Fifteen

According to the SI-system heat contents are measured in units of

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Calorie

Joules

Ergs

Watts

Osmotic pressure of a solution increases by

Choose an answer

Decreasing the temperature

Increasing the volume

Increasing the number of molecules of the solute

None of the above

The three N - Hσ-bonds are made by

Choose an answer

sp³- s overlap

sp²- s overlap

P - p overlap

sp - overlap

Polysaccharides are also called

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Crystals

Sugars

Liquids

None sugars

The force which holds the atoms together to form a compound is called

Choose an answer

A chemical bond

Van der waal's force

Dispersion force

London force

Which of the following is a nucleophile

Choose an answer

OH

CH(CH₃)₃

CH₃⁺

CH₃CH₂CH₃

Which one of the following statements is not correct

Choose an answer

A molecule is the smallest particle of an element which can exist independently

He is a molecule of helium

S₈is a molecule of sulphur

O₃is a molecule of oxygen

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

Choose an answer

Nitric oxide

Nitrous oxide

Nitrogen dioxide

Dinitrogen tetraoxide

In KO₂the oxidation state of oxygen is

Choose an answer

-2

-1

+1/2

-1/2

Which of the following does not exhibit the periodicity in properties of the elements?

Choose an answer

Ionisation energy

N/P ratio

Electronegativity

Atomic radius

Hydrolysis of sucrose is called

Choose an answer

Inhibition

Saponification

Inversion

Hydration

Which is the derived lipid?

Choose an answer

Common fats

Vitamin-D

Common oils

Spinolipids

A solution of glucose is 10% The volume to which 1g mole of it dissolved will be :

Choose an answer

8.1 dm³

1.7 dm³

1.8 dm³

6.1 dm³

Factors affecting denaturation of proteins:

Choose an answer

Change in temp and pH

Strong reducing agent

Strong oxidizing agent

All of these

Monocarboxylic acids exist as dimer because of

Choose an answer

Dipole-dipole attraction

Hydrogen bonding

Van der Waals forces

Conhesive forces

Which of the following are thermoplastic materials

Choose an answer

PVC

Polystyrenes

Polyethylene

All these

Which one of the following gases is used for artificial ripening of fruits

Choose an answer

Ethene

Ethane

Methane

Propane

Which of the followingα-Amino acids has basic R-group

Choose an answer

Proline

Glutamic acid

Histidine

Valine

d-block elements are also called :

Choose an answer

alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Organic compounds are soluble in all except

Choose an answer

Benzene

Petroleum

Ether

Water

Which of the following sulphates is not soluble in water

Choose an answer

Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium sulphate

Which causes water pollution?

Choose an answer

Smoke/fly ash

Automobile exhausts

Aeroplnes

2,4-D and pesticides

On alkali and alkaline earth metals down the group, there is decreasing trend in

Choose an answer

m.p.

b.p.

Ionization potentiall

All of these

Titanium is used as a catalyst in

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Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

Use of ethanol as:

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Drink

Solvent and fuel

In beverage

All of these

Substitution of halogen in the benzene ring requires catalyst

Choose an answer

AlCl₃

FeCl₃

SiO₂

Organo - nickel

A bond between two atoms may be obtained by sharing of electrons such a bond is called

Choose an answer

An ionic bond

A coordinate bond

A dative bond

A covalent bond

The simplest separating unit of a polymer is called:

Choose an answer

Monomer

Dimer

Trimmer

Macromer

Which one of the following will have the maximum dipole moment

Choose an answer

CH₃F

CH₃Cl

CH₃Br

CH₃l

______ is called milk of magnesia

Choose an answer

NaOH

KOH

LiOH

None

Each of the following is true of white and red phosphours except that they

Choose an answer

Are both soluble in CS₂

Can be oxidized by heating in air

Consist of the same kind of atoms

Can be converted into one another

Which of the following compounds will not give iodoform test on treatment with I₂/ NaOH?

Choose an answer

Acetaldehyde

Acetone

Butane

3-pentanone

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

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Mercury

Lead

Nitrogen oxide

Sulphuric oxide

The value of K_pis greater than K_cfor a gaseous reaction when

Choose an answer

Number of molecules of products is greater than the reactants

Number of molecules of reactants is greater than those of products

Number of molecules of reactants and products equal

Catalyst is added

Which one of the following substance is no used as drying agent in desiccators

Choose an answer

Silica gel

CaCl₂

Phosphorous

NaCL(50%)

The force experienced by charged particle is maximum, if it moves

Choose an answer

parallel to magnetic field

perpendicular to magnetic field

opposite to the magnetic field

none of these

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

Photocell is a device which converts

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chemical energy into electrical energy

electrical energy into light energy

heat energy into electrical energy

light energy into electrical energy

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Choose an answer

100 m/sec

140 m/sec

1960 m/sec

196 m/sec

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

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60°

90°

30°

0°

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Choose an answer

G 10^-3T

G = 10^-2T

G = 10^-4T

G = 10^-1T

A solenoid is a coil of wire which is:

Choose an answer

Short, loosely wound, cylindrical

Long, tightly wound, spherical

Long, loosely wound, cylindrical

Long, tightly wound, cylindrical

None of these

When an oscillatory motion repeats itself, then this type of motion is called

Choose an answer

vibratory motion

constant motion

fixed motion

periodic motion

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Choose an answer

11/3 A

3 A

3/11 A

6

The inkjet printer ejects a thin stream of:

Choose an answer

Water

Oil

Ink

Any of above

None of these

A cold soft drink is kept on the balance. When the cap is opened, then the weight

Choose an answer

Increases

Decreases

First increases, then decreases

Remains same

Light year is a unit of

Choose an answer

Time

Distance

Velocity

Intensity of light

Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:

Choose an answer

2 N

- 2 N

18 N

36 N

Graph of Black body radiation is example of

Choose an answer

Band spectra

Continuo's spectra

Line spectra

All

At constant volume temperature is increased. Then

Choose an answer

Collision on walls will be less

Number of collisions per unit time will increase

Collision will be in straight lines

Collision will not change

Work done by the force of friction is always

Choose an answer

Positive

Zero

Negative

Maximum

The rectangular components of a vector are equal in magnitude when the vector makes and angle _______with their x-component:

Choose an answer

0°

30°

45°

60°

When a falling body hits ground, its KE changes to _____ energy.

Choose an answer

Potential

Chemical

Mechanical

sound and heat

A body moving with uniform velocity has

Choose an answer

positive acceleration

negative acceleration

infinite acceleration

zero acceleration

Wave length of light, on the average, is given by:

Choose an answer

10^-14_m

10^-10_m

10^-6_m

10^-4_m

The effect of friction between different layers of a flowing fluid is described in terms of

Choose an answer

motion of fluid

nature of fluid

colour of fluid

viscosity of fluid

Momentum is a parameter associated with

Choose an answer

wave motion

particle motion

neither wave nor particle motion

none of these

The efficiency of petrol engine is usually not more than 25% to 30% because of

Choose an answer

friction

heat losses

both of them

none of them

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Choose an answer

Circular and endless

Oval in shape and endless

Straight

Parabolic

All are true

Rate of flow can be expressed in

Choose an answer

litre/sec

litre-sec

sec/litre

sec/litre-m

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

Choose an answer

Zero

Its average velocity

Its angular displacement

None of these

The magnetic field in the middle of a solenoid due to current is

Choose an answer

weak

strong and uniform

none-uniform

zero

With increase of temperature, the viscosity of liquid and gases

Choose an answer

Increases for both

Decreases for both

Increases for liquids and decreases for gases

Decreases for liquids and increases for gases

Electric generators which convert mechanical energy into

Choose an answer

solar energy

thermal energy

kinetic energy

electrical energy

Tick the correct answer:

Choose an answer

Torque is a vector quantity

Torque is the turning effect of a force

Torque is called moment of a force

All of above

When a high energy photon interact with a metal, which of the following effect is most likely to be taken place

Choose an answer

pair production

photoelectric effect

Compton effect

None of these

The second law of thermodynamics is concerned with the circumstances in which

Choose an answer

heat can be converted into work

direction of flow of heat

none of them

both of them

The emf is measured in:

Choose an answer

Newton

Volt

J/C

Both A and B

Both B and C

A physical system under going forced vibrations is known as

Choose an answer

Simple harmonic oscillator

Compound harmonic oscillator

Physical harmonic oscillator

driven harmonic oscillator

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

Choose an answer

2.9 s

3.0 s

6.6 s

9.6 s

Acceleration of the mass at any instant is given by

Choose an answer

a=k/m x

a= - m/k x

a = - k/m x

a=m/k x

The commercial unit of electrical energy is :

Choose an answer

K Watt

KWH

Horse power

Joule

The magnitude of the force producing an acceleration of 10 m/sec²in a body of mass 500 grams is:

Choose an answer

3 N

4 N

5 N

6 N

A conducting wire is drawn to double its length. Final resistivity of the material will be

Choose an answer

Double of the original one

Half of the original one

One fourth of the original one

Same as original one

The length of rotating vector (on a certain scale) represents the:

Choose an answer

Peak value of alternating quantity

RMS value of alternating quantity

Instantaneous value of alternating quantity

Either (B) or (C)

Either (A) or (B)

A beam of electrons is provided by an

Choose an answer

electron gun

Suppray

Injection

None of these

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Choose an answer

decreases

increases

becomes zero

none of them

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Choose an answer

Longitudinal wave

Transverse wave

No vibration at all

None of them

When there is no relative motion between the magnet and coil, the galvanometer indicates:

Choose an answer

No current in circuit

An increasing current

A decreasing current

Either B or C

Bernoulli's equation is based upon law of conversation

Choose an answer

Mass

Momentum

Energy

None of these

At the starting point of the free fall motion of an object, its acceleration will be

Choose an answer

maximum

minimum

zero

none of them

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Choose an answer

60°

90°

30°

0°

A body of mass 5 kg is acted upon by a total change n momentum will be:

Choose an answer

10 NS

100 NS

140 NS

200 NS

An electronic computer is basically a vast arrangement of electronic switches which are made from

Choose an answer

Resistors

Transistors

N -type crystals

P-Type crystals

Capacitors

The potential difference across each resistance in series combination is

Choose an answer

same

different

zero

none of these

When two objects come to common temperature, the body is said to be in:

Choose an answer

Static equilibrium

Dynamic equilibrium

Thermal equilibrium

None of these

The relation between charge 'Q' and current 'I' is given by

Choose an answer

Q = I/t

Q = It

Q = I²t

Q = I²/t

The acceleration of body executing SHM is directly proportional to

Choose an answer

Applied force

Amplitude

Displacement

Frictional force

Binding energy per nucleus is

Choose an answer

greater for heavy nucleus

least for heavy nucleus

greatest for light nuclei

decreases for medium weight niclei

Examples of moderators used in a fission reactor is/are:

Choose an answer

Water

Heavy water

Carbon

Hydrocarbon

All of these

The concept of direction is purely:

Choose an answer

Absolute

Relative

Relative to stars always

Relative to the sun always

None of these

An example of photoconductor is:

Choose an answer

Boron

Carbon

Iron

Aluminum

Selenium

The distance covered by a body in unit time is called.

Choose an answer

Displacement

speed

Velocity

Both B and C

A circuit has a resistance of 11Ωan inductive reactance of 25Ωand a capacitance reactance of 18Ω. It is connected to an a.c. source of 200 V and 50 Hz. The current through the circuit (in amperes) is

Choose an answer

11

15

18

20

Blood pressure is measured by the instrument

Choose an answer

stethoscope

sphygmomanometer

barometer

none of them

Astrophysics is a branch of physics, which deals with

Choose an answer

Sub-atomic

Stars and galaxies

Light and sound

Music

A certain force gives an acceleration of 2 m/sec²to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Choose an answer

0.5 m/sec²

5 m/sec²

1.5 m/sec²

9.8 m/sec²

Such oscillations in which the amplitude decreases steadily with time, are called

Choose an answer

resonance

force oscillations

large oscillations

damped oscillations

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Choose an answer

0°

30°

60°

90°

Resistor is a device which convert electric energy to

Choose an answer

Heat energy

Chemical energy

Elastic energy

All of the above

The closed loop gain of the non-inverting amplifier is given by

Choose an answer

G = R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

G = 1 + T₂/R₁

The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:

Choose an answer

One coulomb

0.5 coulomb

30 coulomb

2 coulombs

None of these

Which of the following type of force can do no work on the particle on which it acts:

Choose an answer

Frictional force

Gravitational force

Electric force

Centripetal force

The Einstein's changes in length, mass and time are not observed in common life because

Choose an answer

We dont observer then seriously

The masses are too large

Their speed is too small than the speed of right

All of the above

By CAT scans, we can detect the density difference of the order of:

Choose an answer

1%

20%

30%

50%

70%

While describing the motion of a simple pendulum, the frictional effects are

Choose an answer

taken into account

completely ignored

partially ignored

none of them

The property of light which does not change with the nature of the medium is:

Choose an answer

Frequency

Amplitude

Wavelength

None of these

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh^-1. its acceleration will be

Choose an answer

7.71 m s^-2

0.5m s^-2

0.15m s^-2

0.092m s^-2

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

Choose an answer

Moving forward and gaining speed

Moving forward and losing speed

Moving forward with uniform speed

Moving backward with uniform speed

Gaussian surface is always:

Choose an answer

Rectangular

Spherical

Cylinder

Box shape

Any of these

Unit of viscosity is:

Choose an answer

Kg m^-1sec^-1

N s m^-2

J s m^-3

All of these

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Choose an answer

Thumb

Curled fingers

Middle finger

Arm of right hand

None of these

Rutherford performed an experiment on nuclear reactions in:

Choose an answer

1718 A.D

1818 A.D

1918 A.D

2001 A.D.

1701 A.D.

Whenever a covalent bond breaks, it creates:

Choose an answer

An electron

A hole

An electron-hole pair

A positron

All of these

The Boltzman constant has the value

Choose an answer

1.38 x 10^-23JK^-1

1.28 x 10^-23JK^-1

1.38 x 10^-26JK^-1

1.28 x 10^-26JK^-1

The temperature at which the speed of sound becomes double as was at 27°C is

Choose an answer

273°C

0°C

927°C

1027°C

Brownian motion increases due to

Choose an answer

Increase in size of Brownian particle

Increase in temperature of medium

Increase in density of medium

Increase in viscosity of medium

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Choose an answer

20 ms^-2

10 ms^-2

2 ms^-2

1 ms^-2

1 gm-cm^-3is equal to

Choose an answer

10³kg-m^-3

10^-3kg-m^-3

1kg-m^-3

10⁶kg-m^-1

From sand, we get a material used for construction of computer chips. That material is called:

Choose an answer

Germanium

Silicon

Copper

Lead

In case of metallic conductors, the change carries are:

Choose an answer

Protons

Electrons

Antiprotons

Positrons

Both (A) and (B)

Work is a scalar product of

Choose an answer

Force, Velocity

Velocity, Displacement

Force, Displacement

Force, Momentum

A particle moving uniformly along circle its projection along diameter performs

Choose an answer

Linear motion

Projectile motion

SHM

Rotatory motion

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Choose an answer

64 W

80 W

100 W

125 W

Tick the one which is not polymer solid:

Choose an answer

Zirconia

Polythene

Nylon

Synthetic rubber

None of these

Uncertainty is of following type/types:

Choose an answer

Absolute

Fractional

Percentage

All of these

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

Choose an answer

3 x 10²⁰

3 x 10¹⁰

6 x 10²⁰

6 x 10¹⁰

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Choose an answer

10 m/sec²

20 m/sec²

30 m/sec²

Zero

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Choose an answer

Is associated with coil P

Is associated with coil S

Causes and induced current in coil S

All of these

None of these

Which of the following is not a projectile

Choose an answer

a bullet fired from a gun

a space ship

a football in air

an artillery shell

Silicon can be obtained from

Choose an answer

Lead

Uranium

An isotope of oxygen

Sand

When two protons are brought closer potential energy of both of them:

Choose an answer

Increases

Decreases

Remains same

None of these

Arsenic, antimony and phosphorus are the elements from

Choose an answer

third group

fourth group

fifth group

none of them

If a material object moves with the speed of light 'C' its mass becomes

Choose an answer

Equal to its rest mass

Four times of its rest mass

Double of its rest mass

Infinite

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Choose an answer

37.5 km/h

10 km/h

42 km/h

40 km/h

A convex lens acts as diverging lens when the object is placed:

Choose an answer

Between F and 2F

At 2F

With focal length

Beyond 2F