Question # 1

Which one of the following is not air pollutant gas

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CO

CO₂

NO

SO₂

Which of the following is soluble in water?

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СН3ОН

CCL4

CHCI3

CS2

The element which has greatest value of Reduction potential is used as

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Strongest reducing agent

Weak oxidizing and strong reducing agent

Strongest oxidizing agent

None of these

Polymerisation of vinyl acetate is a type of:

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homopolymer

copolymer

ter polymer

All of these

One atmosphere is equal ___________ Pascal

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760

101325

14.7

1.01325

Elements of group ll-A are called

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f-block elements

s-block elements

p-block elements

d-block elements

Carbon-Carbon double bond length in C3H6

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154 pm

134 pm

120 pm

105 pm

Doubling the pressure in a liquid phase reaction

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Will double the rex

Will increase the rex

Will decrease the rex

Will not alter the concentration of reactant

Liquids have definite volume due to

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Negligible spaces

Intermolecular force

Motion

Both a and b

Detergents are surfactants and they reduce the

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B.P. of water

Surface tension of water

Wetting ability of water

None of these

Butane molecule can have maximum no of isomers

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2

5

4

3

the unreactivity of alkanes is based upon

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Inertness of sigma bond

Non-polarity of the bonds

Both A and B

None of above

Which of the following is complex?

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CaSO₄. 0.5H₂O

(C₆H₁₀O₅)_n

C₆H₁₂O₆

CH₄

The tendency of an atom to attract shared electron pair towards itself is called

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Covelent bond

Electronegativity

Ionization potential

Electronic affinity

The unit of rate constant K ismole^-1 dm³for a chemical reaction, the order of reaction is :

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Order of reaction can determined by an experiment

Order of reaction can determined from a balance equation only.

Order of reaction can determined increases by increasing temperate.

Order of reaction must be in whole number and not in fraction.

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-110.7 KJ/mole

+110.7 KH mole^-1

676.7 KJ mole^-1

+393.7 KH mole^-1

Prevention of corrosion of iron by Zn coating is called

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Galvanization

Cathodic protection

Electrolysis

Photoelectrolysis

A fat or oil is characterised for extent of unsaturation by one of the following number, which one

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Rancidity number

Acid number

Iodine number

Saponicfication number

DDT is formed from

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Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and Benzene

Chlorobenzene and chlorine

Which if the following has the highest freezing point at one atmosphere

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0.1 M NaCI

0.1 M sugar solution

0.1 M BaCI₂

0.1 M FeCI₂solution

Which one of the following correctly describes the acid properties of phenol

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Stronger than HCI

Stronger than carboxylic acid

An acid stronger than carbonic acid

An acid weaker than carboxylic acid

As it passes into food chain, the concentration of DDT

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Remains same

Decreases

Increases

Unpredictable

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