NSO Level 1- Science Olympiad (SOF) Class 8: Questions 150 - 153 of 1076

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Question number: 150

» Coal and Petroleum

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MCQ▾

Question

Heating of complex organic substances in the absence of air so that it breaks up into simpler volatile fractions is called:

Choices

Choice (4) Response

a.

Carbonisation

b.

Destructive distillation

c.

Oxidation

d.

All of the above

Question number: 151

» Coal and Petroleum

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MCQ▾

Question

Different components of petroleum are separated by fractional distillation. What is the correct sequence of fractions obtained in the fractionating column from top to bottom?

Choices

Choice (4) Response

a.

Gasoline, Diesel oil, LPG, Fuel oil, Kerosene oil

b.

LPG, Gasoline, Kerosene oil, Diesel oil, Fuel oil

c.

Diesel oil, Gasoline, Kerosene oil, Fuel oil, LPG

d.

Fuel oil, Kerosene oil, Diesel oil, LPG, Gasoline

Question number: 152

» Coal and Petroleum

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MCQ▾

Question

Select the incorrect statements among the following.

I. Bitumen is constituent of petroleum is used in paints.

II. Due to its great commercial importance and dark colour, petroleum is also called ‘Black gold’.

III. Paraffin wax is a product of coal tar and is used for manufacturing candles, polishes, waxed paper, water-proofing, etc.

IV. The burning of fossil fuels is adding excessive amount of carbon monoxide in the air leading to greenhouse effect which can cause global warming.

Choices

Choice (4) Response

a.

II and III only

b.

II and IV only

c.

I and III only

d.

III and IV only

Question number: 153

» Coal and Petroleum

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MCQ▾

Question

Petroleum is formed from

Choices

Choice (4) Response

a.

Organisms in sea

b.

Wild animals

c.

Domestic animals

d.

Insects

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