Question # 1

Which of following is primary pollutants

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N₂O

PAN

H₂SO₄

None of these

In which of the following types of reactions are the carbonyl compounds and alkene are similar in behaviour

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Nucleophilic addition

Electrophilic addition

Nucleophilic suhstitution

Catalytic hydrogenation

The bonds present in the primary structure of proteins are by

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Dialysis

Electrophoresis

Filtration

Alcohol precipitation

The arrangement ABC, ABC .... is referred as

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cubic close packing

octahedral close packing

hexagonal close packing

tetrahedral close packing

Which one is a non-polar compound?

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SnCl2

PH3

Gecl4

H2O

The mechanism of polymerization involves free radical addition polymerization or condensation polymerization. Choose the correct statement

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Polyester is an addition polymer

Polythene is an addition polymer

Polyvinyl chloride (PVC) is a condensation polymer

Polystyrene

The attractive forces between molecules of a gas and their sizes can be ignored at

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high pressure

low temperature

low temperature and high pressure

low pressure and high temperature

Common names of carboxylic acids are given by then:

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Source

Person discovered

Place

Habit

Polymers class is:

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homopolymer

copolymer

ter polymer

All of these

Indicate the number of open chain isomers of C6H14

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4

5

6

7

The %age composition of the auxiliary agent in a detergent is:

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10%

30%

50%

70%

Acid rain is due to increase in atmospheric concentration of

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Ozone and dust

CO₂and CO

SO₃and CO

SO₂and NO₂

Bessemer converter is used in the manufacture of

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Pig iron

Steel

Wrought iron

Cast iron

The radius of first orbit of H-atom is

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4.75 A°

3.84 A°

8.4 A°

0.529 A°

Ethylene polymerizes at 100 atm pressure and 400°C to give

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Polybenzene

Polyalcohol

Polypropylene

Polyethylene

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Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

Hydrocarbons contain

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C and S only

C and H only

C, H, and O only

C, H, O and N only

Isotopes differ in the

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Number of neutrons

Number of protons

Number of electrons

Number of atoms

Easter are pleasant smelling compounds. Which ester posseses odour like pineapple

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Amylacetate

Amylbutyrate

Ethylbutyrate

Benzylacetate

Volcanoes produce SO₂:

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47%

57%

67%

77%

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

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Fullerences

Freons

Polyhalogens

Ferrocene

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A strong reducing agent

A strong oxidising agent

Better oxidising agent than hydrogen

Less reducing agent than hydrogen

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