Question # 1

The hetero atom in py ridine is

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Oxygen

Nitrogen

Chlorine

Sulphur

When ethyl magnesium bromide is treated with carbon dioxide and the product hydrolyzed we get

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formic acid

propionic acid

oxalic acid

acetic acid

The volume of an ideal gas is decreased to half, What will happen to the force exerted on the walls of the container by the gas particles?

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the force is halved

the force increases by a factor of 4

the force remains constant

the force increased by a factory of 2

A single chloride free redical can destroy bow many ozene molecules?

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100

100000

10000

10

Which is not a calcareous material?

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line

clay

marble

marine shell

First order of protein structure refers to

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Bending of protein chain

Number and sequence of amino acids

Three dimensional structure of protein

Site of disulfide bonds

During the electrolysis of Fused NaCI, the products are

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Na and H2

Na and Cl2

Na and O2

H2 and Cl2

The pH range of acid rain is:

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6.5 -6

8-7.5

Less than 5

7- 6.5

Which of the following gives silver mirror with ammonicaT AgNO3

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Benzyl alcohol

Benzene

Benzoic acid

Benzaldehyde

Which of the following substance is used as filler or additive in paper making:

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Glucose

Starch

Fructose

Cellulose

Which gas produces air pollution?

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oxides of sulphur

oxides of carbon

all of these

Which of the following is a polyamide?

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Nylon

Orlon

Teflon

Terylene

In the particular reaction for the valueK_{c 1 x}10^-25which statement is correct :

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Almost forward reaction is completed.

Amount of reactant is negligible as compared to product.

Amount of product is negligible as compared to reactant.

Amount of product is equal to amount of reactant.

The relative lowering of vapour pressure is equal to the mole fraction of the solute, This law is called

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Henry's law

Raoult's law

Ostwald's law

Arrhenius law

A substance which increases the rate of a reaction without being consumed during the reaction is called

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An autocatalyst

A catalyst

A negative catalyst

All of these

Which of the following species has unpaired electrons in antibonding molecular orbitals

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The charge over mass ratio of electron is:

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1.6 x 10^-1 C Kg^-1

9.1 x 10^-31 C Kg^-1

1.7588 x 10¹¹ C Kg^-1

6.62 x 10^-34 C Kg^-1

The oxidation number of each element of group l-A is

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0

+1

+2

-1

Which is not the affect of polluted air on environment

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Acid rain

Smog

Ozone

Global warming

Which of the following fibres are made of polyamides?

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Dacron

Orlon

Nylon

Rayon

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Borax is hydrated:

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Penta

Deca

Hepta

Octa

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