Question # 1

Critical temperature for a gas depends upon

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Shape of molecule

Size of molecules

Inter molecular forces

All of these

When a compressed gas is allowed to pass through a nozzle of a jet into a region of low pressure, it produces

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cooling

vaporization

fusion

expansion

Carbon Monoxide is:

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colouriess

orderless

high toxic

All of these

A polymer of polyvinyl chloride with DP 1000 has molecular or molar mass:

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630

6300

63000

630000

SO₂and NO₂cause pollution due to increase in

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Buffer action

Basicity

Acidity

Neutrality

The heat of reaction depends upon

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Temperature of the reactants

Physical states of the reactants and the products

Both A) and B)

Path of the reaction and the temperature

The number of atoms in 0.004 g of magnesium is close to

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24

2 x 10²⁰

10²⁰

6.02 x 10²³

Which of the following is sulphur highly containing protein

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Collagen

Keratin

Ossein

Reticulin

The reaction kinetics concerned with the

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Rate of reaction

Direction of reaction

Factor effecting rate of reaction

both a &b

Which polymerization is free radical mechanism based

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Addition

Condensation

Both a and b

None

Which substance among the following used in points to improve the mechanical properties?

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filter

binder

pigment

stablizer

All the following decompose easily on heating to give oxygen except

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Lead nitrate

Potassium chlorate

Mercuric oxide

Manganese dioxide

Buffers having pH less than 7 are made

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Mixture of weak acid + salt of it with strong base

Mixture of weak acid + salt of it with weak base

Mixture of weak base + salt of it with strong acid

Mixture of weak base + salt of it with weak base

When elements of group I react with the elements of group VIA theory form

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Ionic bond

Covalent bond

Polar bond

None

Which of the following factors does not influenced the rate of reaction

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Concentration of the reaction

Nature of the reactants

Molecularity of the reaction

Temperature

Eutrophication causes reduction in

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Dissolved hydrogen

Dissolved oxygen

Dissolved salts

All the above

Platinum (IV) chloride combines with ammonia to form compounds in which the coordination number of the platinum is 6. A formula unit on one of the compound contains a cation and only two chloride ions. What is the formula of this compound

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Pt(NH₃)₆CI₄

Pt(NH₃)₅CI₄

Pt(NH₃)₄CI₄

Pt(NH₃)₃CI₄

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

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1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol

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

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Tested

^Filtered

Checked

All of above

which one of the following is not a nucleophile?

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H₂O

H₂S

BF₃

NH₃

Azeotropic mixture of HCl and water has

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48% HCl

22.2% HCl

36% HCl

20.2% HCl

Which of the following is the strongest acid?

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CF₃COOH

CBr₃COOH

CH₃COOH

CCl₃COOH

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