Question # 1

There are _________ types of bonds.

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1

2

3

4

The cathode of Daniel cell is made up of

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Zn

Cu

AI

C

Halogens with metals for

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Ionic bond

Covalent bond

Dative covalent bond

Metallic bond

The symbol of sodium is :

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Sa

Na

Pa

Ca

________________ solids are hard.

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Ionic

Covalent

Coordinate

Nil

How many covalent bond does C₂H₂ molecule have?

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two

three

four

five

At ____________ °C water converts to ice.

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101°

100°

99°C

100.2°C

The unit of Molarity is :

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Molar

Volume

Both

Nil

Which one is the following belongs no Noble Gases?

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O

F

Ne

Nil

The earth is made up of ___________ % of iron.

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4

5

6

7

Gases have fixed ____________

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Shape

Volume

Area

Nil

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

Methyl butanoate smells like;

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a pine apple

an apple

an orange

a lemon

The percentage of water in human body is about:

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60%

50%

70%

80%

The water of crystallization is responsible for the.

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Melting points of crystals

Boiling points of crystals

Shapes of crystals

Transition point of crystals

Acid means

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Sour

Bitter

Sweet

Salty

A neutral salt is not composed of.

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Anion of base

Anion of acid

Metallic ion

Non metallic anion

Malic acid founds in:

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Apple

Fats

Rancid Butter

Oranges

The value of K_c depends on.

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Temperature

Pressure

Volume

Atmosphere

Atmosphere has regions.

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One

Two

Three

Four

Which one is Lewis Acid?

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BF₃

AICI₃

FeCl₃

All of these

Which hydrocarbon molecule would have no effect on the aqueous solution of bromine?

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CH₄

C₁₀H₂₀

C₂H₄

C₂H₂

Orbitals having same energy are called

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Hybird orbitals

Valence orbitals

Degenerate orbitals

D-orbitals

A pressure cooker reduces cooking time because.

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Heat is uniformly distributed

Boiling point of water rises

A large flame is used

Vapour pressure of liquid reduces

An ionic compound A⁺B^-is most likely to be formed when

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The ionization energy of A is high and electron affinity of B is low

The ionization energy of A is low and electron affinity of B is high

Both the ionization energy of A and electron affinity of B are high

Both the ionization energy of A and electron affinity of B are low

Haemoglobin is a Macro molecule and consists of approximately atoms.

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5000

10,000

68000

15000

The vapour pressure of an aqueous solution of glucose is.

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Equal to vapour pressure of water

Independent of temperature

More than vapour pressure of pure water

Less than vapour pressure of pure water

At constant temperature in a given mass of and ideal gas.

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The ratio of pressure and volume remains constant

Volume always remains constant

Pressure always remains constant

The product of pressure and volume remains constant

Bohr's model of atom is contradicted by

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Planck quantum theory

Quartization of energy of electrons

Heisenberg's uncertainty principle

Quartization of angular members

12.04 x 10²³atoms of nitrogen gas is equal to.

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1 mol

2 mol

3 mol

4 mol

pKa of CH3COOH is 4.74. The pKb value of CH3COO- ions will be

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7

14

9.26

zero

Mass of 22.4 dm3 of N2 at STP is.

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28 gm

14 gm

1.4 gm

2,8 gm

Quantum number value for 2p sub shell are

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n = 2, I = 1

n = 1, l =1

n = 1, l = 0

n = 2, l = 0

What is effect of solubility of carboxylic acid in water by increasing their molecular masses.

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Decreases

Increase

Remain constant

Non effected

Vinyl acetlylene reach with HCl to form

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Polycetylene

Benzene

Chloroprene

Divinylacetylene

Reverse of esterification is known as

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Trans esterification

Saponification

Hydrolysis

Neutralization

------------- metal is used in the Thermite process because of its reactivity

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Tron

Copper

Aluminium

Zinc

The IUPAC name of C(CH3)4 is

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Iso Propyl methane

2-Methylbutane

Iso bytylmethane

2,2 dimethylpropane

The fiber which is made from acrylonitrile as monomer

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PVC

Polyester fiber

Rayon fiber

Acrylic fiber

A solution of borax in water is.

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Acidic

Alkaline

Neutral

None of these

The catalytic oxidation of methane produces

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CO + H₂O

CO₂+ H₂O

C₂+ H₂O

H₃C - OH

The most reactive alcohol when O-H bond breaks is

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Tertiary alcohol

Secondary alcohol

Primary alcohol

Methyl alcohol

Which one of the following products will be formed in Wurtz reaction when sodium metal reacts with ethyl chloride in anhydrous ether.

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Methane

Ethane

Propane

Butane

The number of peptide bonds in dipeptide is

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0

1

2

3