Question # 1

N consist of ________________ sub shells.

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4

1

2

0

At ____________ °C water converts to ice.

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101°

100°

99°C

100.2°C

The reaction of ionic compound is very ________________ in solution.

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Slow

Fast

Medium

Nil

Suspension's solute particles ____________ at bottom.

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Dissolves

Settle

Both

Nil

The symbol of barium is:

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Ba

Bi

Br

B

Energy of a shell is ________________

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Variable

Constant

Cannot be changed

Nil

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

Es is symbol of :

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Erbium

Einsteinium

Europium

Fremium

Tyndall effect is shown by:

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sugar solution

paints

jelly

chalk solution

____________ solids are arranged in 3 dimension.

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Crystalline

Amorphous

Both

None

PCL5 is ________________ shaped.

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Bipyromidal

Angular

Triangular

Linear

Water which produces good lather with soap is called.

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Soft water

Hard water

Heavy water

All of them

Condensed formula of ethane is.

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C₃H₈

C₂H_2n+2

C₂H_2n-2

C_nH_2n+1

DNA was discovered by

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J .Watson

Funk

Robert brown

Hopkins

In hydrogenation of vegetable oil catalyst employed is.

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Ni

Pt

ZnO

Cr₂O₃

Which one is Lewis Acid?

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BF₃

AICI₃

FeCl₃

All of these

Which one of the following are amorphous solids?

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Monosacchrides

Oligosaccharides

Polysaccharides

All of them

The product of Lewis acid-base reaction is called adduct. The bond between the adduct species is.

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Ionic

Covalent

Metallic

Co-ordinate covalent

Rickets disease is caused by the deficiency of.

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Vitamin D

Vitamin A

Vitamin E

Vitamin C

Molecular formula of stearic acid is.

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C₁₅H₃₁ COOH

C₁₂H₁₅COOH

C₁₅H₃₀COOH

C₁₇H₃₄COOH

Ozone is an allotropic form of

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Carbon

Oxygen

Sulphur

Phosphorous

Binary compounds of oxygen such as CO2 and SO2 were names as acids by;

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Jabir Bin Hayan

Lavoisier

Al- Jahiz

Sir Humphrey Davy

Polymorphic substances have

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Same physical and chemical properties

Different physical and chemical properties.

Same physical but different chemical properties

Different physical and same chemical properties.

Which of the following compound has the highest % o f oxygen by weight

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CH₃- OH

C₂H₅OH

HCOOH

H₂O

When 6d orbital is complete, the entering electron goes into.

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7f

7s

7p

7d

The molar volume of CO₂is maximum at

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STP (0°C and 1 atm)

127° C and 1 atm

0°C and 2 atm

273°C and 2 atm

Depression of freezing point method is used for determination of molar masses of

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Electrolytes

Non-volatile solids

Volatile solids

Volatile liquids

The molecules of a gas show more deviation from ideal behaviour at low temperature, because

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Attractive force dominate at low temperature

Kinetic energies are increased

Collisions become less frequent

Densities of the gases increase

Mass of 22.4 dm3 of N2 at STP is.

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28 gm

14 gm

1.4 gm

2,8 gm

The bond angle in NH3 molecule is

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109.5^o

107.5^o

104.5^o

106^o

Gas molecules show more deviation from ideal behaviour at high pressure because.

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Velocity of molecules increases

Velocity of molecules decreases

Force of attraction between molecules increases

Force of collision per unit area increases

The effect of temperature on equilibrium was studied by

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Lewis

Van der wall

Arrhenius

Vant hoff

Which particle has a mass 1/1836 time, that of hydrogen.

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Proton

Positron

Electron

Neutron

Which one of the following proteins transports oxygen in blood stream.

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Insulin

Albumin

Hemoglobin

Globulin

Which of the following is a non typical transition element.

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Cr

Mn

Zn

Fe

Which gas has highest boiling points.

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He

Ne

Ar

Kr

Aluminium is used for making petrol and milk storage tanks because it is

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Conductor

Non magnetic

Excellent reflected

Corrosion resistant

Keeping in view size of atoms ,which order is the correct one.

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > I

The conversation of n-hexane into benzene by heating in in the presence of Pt is called

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Isomerization

Aromatization

Dealkylation

Rearrangement

Which of the following element is not present in all proteins

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Carbon

hydrogen

Nitrogen

Sulphur

Sodium is collected over molten sodium chloride in Down's cell, because.

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It does not react with NaCl

It is lighter in weight and floats on molten NaCl

Its reactivity is greater than NaCl

None of these

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

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

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Acetaldehyde

Acetone

Butanone

3-Pentanone

The residence time of NO is

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Few hours

1 day

3 days

4 days