Question # 1

If rate of diffusion of A is 5 times that of B,what will be the density ratio of A and B?

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1/25

1/5

25

5

Potency and turn over are terms related to:

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enzymes

proteins

fats

oils

All of following acids have hydrogen bond in liquid state except:

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nitric acid

sulphuric acid

hydrochloric acid

hydrofluoric acid

At same temperature which substance has high kinetic energy:

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Liquid water

N₂gas in a container

Solid piece of iron

Solution of alcohol and water

The clotting time of blood is increased due to the deficiency of

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vitamin A

vitamin K

vitamin D

vitamin C

A real gas obeying van der Waals equation will resemble ideal gas if

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Both a and b are large

a is large and b is small

Both a and b are small

a is small and b is large

SO₂produced by volcanoes is about

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75%

67%

69%

70%

Which of the following statements is false?

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Avogadro number = 6.02 x 10²¹

The relationship between average velocity (v) and root mean square velocity (u) is v = 0.9213 u

The mean kinetic energy of an ideal gas is independent of the pressure of the gas

The root mean square velocity of the gas can be calculated by the formula (3RT/M)^1/2

The temperature below which a gas does not exist is called its

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Inversion temperature

Critical temperature

Neutral temperature

Curie point

The pi-electrons in the styrene are

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13

10

8

6

The percentage of SO₂ produced by volcanoes is:

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47%

57%

67%

77%

The compounds which have any atom other than Carbon atom, in rings are called as

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Monocyclic

Heterocyclic

Homocyclic

None of the above

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a

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Fibre

Plastic

Varnish

Polyamide resin

Objects of the size of an atom can be observed in

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An electron microscope

An x-ray spectrum

Atomic absorption spectrum

A visible spectrum

Which of the following was discovered first:

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Charge to mass ratio of electrons.

Mass of electrons.

Charge of electrons.

All of above at same time.

Silk is an example of

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Animal fiber

Vegetable fibre

Mineral fibre

None of these

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Primary alkyl halide

Secondary alkyl halide

Tertiary alkyl halide

None of these

In a solution of CuSO₄how much time will be required to precipitate 2g copper by 0.5 ampere current?

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12157.48 sec

102 sec

510 sec

642 sec

Which of the following has zero depole-moment?

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CIF

PCl₃

SiF₄

CFCl₄

Which of the following fluorides does not exists?

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NF₅

PF₅

AsF₅

SbF₅

The organic compound, alcohols are much closer to, in structure and hence is also called its derivative:

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Water

Oxidizes of lithium oxides

Oxidizes of magnesium

Oxidizes of aluminium

Ozone layer of stratosphere requires protection from indiscriminate use of

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Baloons and turbo-prop aeroplanes

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