Question # 1

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

What happens when CCl₄is treated with AgNO₃solution?

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NO₂will be evolved

A white ppt. of AgCl will form

CCl₄will dissolve in AgNO₃solution

Nothing will happen

Which of the following fertilizers is useful for paddy rice

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Ammonium nitrate

Ammonium sulphate

Urea

Ammonium chloride

The change in concentration of reactant or product per unit time is called :

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Rate constant.

Rate of reaction.

Rate equation.

Rate law.

NaBH₄and LialH₄are

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Ionic hydrides

Covalent hydrides

Interposal hydrides

Complex hydrides

The chemical reactivity of glass is reduced by the use of

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Fluxes

Formers

Stabilizers

None of these

The C-C bond angles in benzene ring are

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119°

120°

121°

None

Self condensation of acetaldehyde in the presence of dilute alkalies gives

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An acetal

An aldol

Mesitylene

Propionaldehyde

Which one of the following is not an example of chain growth polymer?

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Neoprene

Bunna-S

PMMA

Glyptal

For principle quantum number n=4, the total number of orbitals having l = 3 is

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3

7

5

9

The rate of E₁reaction depends upon:

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The concentration of substrate

The concentration of nucleophile

The concentration of substrate as well as nucleophile

None of these

Analytical chemistry is the science of

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Chemical characterization

Physical characterization

Biological characterization

Biochemical characterization

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

Ether show the phenomenon of :

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Position isomerism

Functional group isomerism

Metamerism

Cis-trans isomerism

Electrolytes in the form of solution or in the fused state have the ability to conduct :

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Light.

Electricity.

Ions.

Electrons.

The elements of group lA are called

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Chalocogens

Halogens

Alkali metals

Alkaline earth metals

Which one of the following substances is a synthetic polyester

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Cotton

Nylon

Rayon

Terylene

A state function of the system which describes together the internal energy and the work done is called

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Enthaply

Internal energy

Work

Free energy

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. the easter is

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Ethyl methonoate

Methyl ethanoate

Propylamine

Ethylamine

Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer

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Silk

Polyester

Polyvinyl chloride

Nylon

Gypsum is a common mineral of

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Magnesium

Strontium

Calcium

Barium

Heat absorbed or released during the chemical reaction of physical process at constant pressure is equal to

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Shift reaction toward forward direction

Shift reaction backward

Lower the value of K_c

No change in reaction

Which of the following oxides is unlikely to dissolve in aqueous hydroxide

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Al₂O₃

MgO

SO₂

SIO₂

In a lime kiln, to get higher yield of CO₂, the measure that can be taken is

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To main high temperature

To pump out CO₂

To remove Cao

To add more CaCO₃

Methyl alcohol is not used

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As a solvent

A an anti-freezing agent

As a substitute for petrol

For denaturing of ethyl alcohol

Which of the statements given below concerning properties of solution, describe a colligative effect?

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Boiling point of pure water decreases by the addition of ethanol

Vapour pressure of pure water decreases by the addition of nitric acid

Vapour pressure of pure benzene decreases by the addition of naphthalene

Boiling point of pure benzene increases by the addition of toluene

The ratio of the ionization energy of H and Be³⁺is

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1 : 1

1 : 3

1 : 9

1 : 16

Wolf-kishner reduction is used for the reduction of

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Nitro compounds

Carboxylic acids

Carbonyl compounds

Olefins

Glycogen is stored in

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Animals

Plants

Soil

None of these

Which statement is incorrect for and ideal solution

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The forces of attractions between solute and solvent molecules are same

There is no evolution or absorption of heat

Volume of the solution is less than sum of volumes of individual components

Vapour pressure of solution is directly proportional to the mole fraction of solvent

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