NSO Level 1- Science Olympiad (SOF) Class 8: Questions 151 - 153 of 1178

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Question 151

Question MCQ▾

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

Edit

Question 152

Question MCQ▾

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

Edit

Question 153

Question MCQ▾

Petroleum is formed from

Choices

Choice (4)Response

a.

Organisms in sea

b.

Wild animals

c.

Domestic animals

d.

Insects

Edit