Question # 1

At 100 atm, CH₄ develops:

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Ideal attitude

Non-ideal attitude

Serious attitude

Laughing attitude

The Catalyst used in the contact tower for the manufacture of H₂SO₄ is easily poisoned by:

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Nitrous oxide

Nitrogen gas

Arsenic oxide

Carbon dioxide

If empirical formula of a compound is CH2 and its molecular mass is 56amu. What will beits molecular formula

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CH2

C3H6

C2H4

C4H8

What are the S.I. units of excluded volume "b" in Vander Waal's equation

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dm³mol^-1

m³mol^-1

mol dm^-3

mol m^-3

How many balloons of 0.25 dm³capacity at I atmospheric pressure can be filled from a hydrogen gas cylinder of 5 dm³capacity at 10 atmospheric pressure

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50

90

180

200

The number of Na+, ions which surround each Cl- ion in the NaCl crystal lattice is

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8

12

6

10

Water is made disinfectant during purification of water to the step:

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aeration

coagulation

chlorination

treatment

In dilatometric method is directly proportional to extent of reaction

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Change in concentration

Change in pressure

Chang in volume

Change in temperature

Stalagmometer is used to measure

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the resistance to flow of a liquid

capillary action of a liquid

Meniscus of the liquid

surface tension of the liquid

The reason of acid rains is

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Release of CO in excess by in complete combustion

Excess release of NO₂and SO₂from buring of fossil fules

Formation of excess CO₂due to combustion and respiration

Formation of NH₃in excess from industry and coal gas

At constant temperature, volume of given mass of gas in inversely proportional to pressure on it. This statement is according to:

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Hook's law

Graham's law

Bolye's law

Charle's law

Which are used as essences (flowers)?

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Aldehydes

Ketones

Alcohols

Esters

Acetamide is

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Highly acidic

Highly basic

Neutral

amphoteric

The wave number of the line emitted is 109.678 x 10⁵m^-1in the Lyman series when electron transition occurs

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The unit rate of constan K ismole^-1 dm³S^-1for a chemical reaction, the order of reaction is :

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3

2

1

0

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Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

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0

1

2

3

Toluene is also called

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Hydroxyl benzene

Methyl benzene

ethyl benzene

None

Most reactive halide towards S_N1 reaction is

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n-Butyl chloride

sec-Butyl chloride

tert-Butyl choride

Allyl chloride

Lower carboxylic acids are soluble in water due to

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Low molecular weight

Hydrogen bonding

Dissociation into ions

Easy hydrolysis

Phenol is more readily soluble in

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Dil. HCl

Both NaOH and HCl

NaOH sol

Sodium bicarbonate solution

A colloidal gel is:

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3Ca, Al₂O₃

CaSO_2.2H₂O

3CaAl₂O₃.3CaSO₄.2H₂O

3Ca.Al₂O₃.6H₂O

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