Question # 1

The percentage of SO₂released by the combustion of coal and petroleum product.

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40%

60%

70%

80%

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

When acid react with carbonates and bicarbonates which gas is evolved?

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H2

CO₂

Cl₂

N₂

A substance which can behave as an acid as well as a base is called.

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Acid

Base

Amphoteric

Neutral

Which one is not the fraction of residual oil?

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Paraffin wax

Asphalt

Fuel oil

Coke

Which one is Lewis Acid?

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BF₃

AICI₃

FeCl₃

All of these

In shoe polished, which chemical is used.

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Ethanol

Methanol

Carbon black

Formaldehyde

Main component of Natrual gas.

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CH₃

CH₄

C₂H₆

C₂H₂

When crude oil is heated in the fractionating tower:

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Vapour of higher boiling point fraction condense first in the lower part of the tower.

Vapours of lower boiling point fraction condense first in the lower part of tower.

Vapour of higher boiling point condense lather in the upper part of tower.

Vapours of higher boiling point never condense.

Alkyl radical is derivative of

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Alkane

Alkene

Alkyne

All

Acidic solutions have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

Which one is triglyceride.

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carbohydrates

Proteins

Lipids

Vitamins

Reactions which have comparable amounts of reactants and products at equilibrium state have:

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very small Kc value

Very large Kc value

Moderate Kc value

None of these

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