Question # 1

Benzene + Ozone → Y. in this sequence Y is

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Benzene monoozonide

Benzene diozonide

Benzene triozonide

Succinic acid

The osmotic pressure of solution increases if

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Temperature is decreased

Solution constant is increased

Number of solute molecules are increased

Volume is increased

Which of the following represents elements in order of increasing atomic size?

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I,Br,CI

Na,Mg,C

C,N,O

Li,Na,K

Which is the most amphoteric?

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Na₂O

MgO

AI₂O₃

CaO

2 g oxygen contains number of atoms equal to that in

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0.5 g of hydrogen

4 g of sulphur

7 g of nitrogen

2.3 g of sodium

In cold countries ethylene glycol is added to water in radiators of cars during winter It result in

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Lowering in b.pt.

Reducing viscosity

Reducing specific heat

Lowering in freezing pt.

Reaction of ethylamine with chloroform in alcoholic KOH producers

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Variable valency is generally exhibited by

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Normal elements

Transition elements

Metallic elements

None of these

Toluene can be oxidized to benzonic acid by

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KMnO4 (alk)

K₂Cr₂O₇(acidic)

Both

None

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