Chemistry-Carbon and Its Compounds (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 6 - 7 of 7

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Question number: 6

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

Coal is a fossil fuel and it cannot be prepared in a laboratory or industry because the formation of coal

I. is a very slow process.

II. needs very low pressure and low temperature.

III. needs very high pressure and high temperature.

IV. causes air pollution.

Select the correct alternative.

Choices

Choice (4) Response
a.

III and I

b.

II and IV

c.

IV and III

d.

I and II

Question number: 7

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

The gaseous fuels

I. burn without producing smoke.

II. have low calorific value.

III. are easy to ignite.

IV. have high calorific value.

Select the correct alternative.

Choices

Choice (4) Response
a.

I and II

b.

II and III

c.

III and IV

d.

IV and II

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