Question # 1

If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to

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4P

P

2P

3P

The rate of diffusion of a gas is:

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Inversely proportional to its density.

Inversely proportional to square root of its molecules mass.

Directly proportional to molecular mass.

Directly proportional to its density.

In order to determine ∆H (latt) of ionic compound which is correct relationship

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∆H latt. = ∆Hf - ∆Hx

∆H latt. = ∆Ha + ∆Hv

∆H latt. = ∆Hf + ∆Hx

∆H latt. = ∆Hf - ∆H sol.

Which of the following formula is correct for density of any gas

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d = RT/PM

d = PM/RT

d = MT/PR

d = RM/PT

Which of the following folymer is used as binder

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PVC

PVA

Acrylic resins

Polyester

Essential alpha-amino acids are those which are necessary in the diet.

Which one is an essential alpha-amino acids

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Alanine

Aspartic acid

Glycine

Tryptophan

For an endothermic reaction, enthalpy of reactants

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Is smaller than that of the products

Is greater than that of the products

Must be greater or smaller than that of the products

Is equal to that of the products

At ordinary temperature, the most nearly ideal gases are

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N₂

He

H₂

all these

One of the following is a ionic solid. Which is that?

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Fe

KBr

Diamond

Cr

The toxic organic compounds and heavy metals and metalloids results in contamination of

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surface water

ground water

both surface and ground water

neither surface nor ground waters

The reagent used to distinguish between ethanol and propanal is

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I2/ NaOH

Benedict's reagent

LiAIH

sodium nitroprusside

As a fixing agent in photography, sodium thisoulphate is used for

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Dissolving out unreacted silver bromide

Converting silver

Reducing solubility of AgBr

Preventing overdeveloping and fogging

After chlorination, the pulp is washed at:

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20°C

30°C

40°C

60°C

Quantity of heat evolved or absorbed during the reaction is measured according to the equation

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The general formula of saturated alicyclic hydrocarbons is:

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C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-1

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

The order of reactivity for a given halogen in Grignard's reagent is:

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CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

The sum of mole fractions (X) of components of solution is equal to

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100

200

One

Zero

Which of the following gases is used for illuminating purpose?

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Methane

Ethane

Propane

Butane

Selection of filter paper depends upon sizes of particles to be :

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Tested.

Filtered.

Checked.

All of above.

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There is no change in temperature

No change in volume

Heat is absorbed

Heat is released

Cl₂reacts with CS₂in presence of AlCl₃to form

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CHCl₃

CCl₄

C₂H₅Cl

C₂H₆

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