IGCSE Chemistry Paper-1: Specimen Questions with Answers 9 - 10 of 99

Question 9

Question

MCQ▾

In an oil refinery, petroleum is separated into useful fraction as shown below.

What are fractions X, Y and Z?

An Oil Refinery, Petroleum Figure is Given

Choices

Choice (4)

a.

X is paraffin (kerosene) , Y is Bitumen and Z is fuel oil

b.

X is fuel oil, Y is Bitumen and Z is paraffin (kerosene)

c.

X is paraffin (kerosene) , Y is fuel oil and Z is bitumen

d.

X is fuel oil, Y is paraffin (kerosene) and Z is bitumen

Answer

c.

Explanation

Petrol Refinement Process

From the above figure the sequence we get is clear.

Refinery Gases ⇾ Gasoline ⇾ Kerosene ⇾ Diesel Oil ⇾ Fuel Oil ⇾ Bitumen

Question 10

Question

MCQ▾

The table explains atmospheric composition of four newly discovered planets.

Various Planets with Composition
planetcomposition of atmosphere
Wargon, carbon dioxide and oxygen
Xargon, nitrogen and oxygen
Yargon, carbon dioxide and methane
Zmethane, nitrogen and oxygen

On which planets is the greenhouse effect likely to occur?

Choices

Choice (4)

a.

W only

b.

W, Y and Z

c.

W and Y only

d.

W, X and Z

Answer

b.

Explanation

The most abundant greenhouse gases are:

  • Water vapour
  • Carbon di oxide
  • Methane
  • Nitrous oxide
  • Ozone
  • Chlorofluorocarbons

In the above table only X planet does not contain any of the greenhouse gas.

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