Multiple choice

Match the following.

a. Nitrogen 1. Mixture of gases
b. Carbon dioxide 2. Major part of air
c. Air 3. Burning of fuels
d.Pollution 4. Used by plants to make food

  1. a - 1, b - 2, c - 3, d - 4

  2. a - 4, b - 3, c - 2, d - 1

  3. a - 2, b - 4, c - 1, d - 3

  4. a - 2, b - 4, c - 3, d - 1

  5. a - 4, b - 2, c - 1, d - 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. Nitrogen constitutes a major part of air, carbon dioxide is used by plants to make food, air is a mixture of gases and pollution is caused by burning of fuels.

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