Question # 1

The maximum number of electrons in a subshell for whichι = 3 is

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14

10

8

4

DDT is formed from

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Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and benzene

Chlorobenzene and chlorine

Number of elements present in the fifth period of periodic table is

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8

10

18

32

A clathrate may be defined as a

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Cage compound

Liquid crystal

Mixture

Solid solution

Which one of the following compounds does not exist?

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NCl₅

AsF₅

SbCl₅

PF₅

Ethanol containing some methanol is called

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Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

Which of the following is monoatomic?

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Oxygen

Neon

Fluorine

Nitrogen.

In Friedal-Craft's alkylation besides AlCl₃the other reactants are

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C6H6 + NH3

C6H6 + CH4

C6H6 + CH3Cl

C6H6 + CH3COCl

The relative rates of diffusion of a gas (molecular weight = 128) as compared to oxygen is

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2 times

1/4

1/8

1/2

Each of following is true of white and red phosphours except that they

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Are both soluble in CS₂

Can be oxidized by heating in air

Consist of the same kind of atoms

Can be converted into one another

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

The number of electrons in the M shell of the element with atomic number 24 is

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24

12

13

8

The heat evolved in combustion of rhombic and monoclinic sulphur are -70960 and -71030 cal mol^-1respectively. What will be heat of conversion of rhombic sulphur to monoclinic?

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70960 calories

71030 calories

-70 calories

+70 calories

Calcium acetate when dry distilled gives

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Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

Potassium is kept in

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Water

Ammonia

Alcohol

Kerosene.

The acid used in lead storage cells is

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Phosphoric acid

Nitric acid

Sulphuric acid

Hydrochloric acid

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