Chemistry
Grade-10
Easy
Question
Match the following with the correct uses.
| a) Oxygen | i) Rat poison |
| b) Iodine | ii) Antiseptic |
| c) Nitrogen | iii) Manufacturing ammonia |
| d) Phosphorus | iv) Respiration |
- a - iv, b - ii, c - iii, d - i
- a - iii, b - iv, c - i, d - ii
- a - i, b - ii, c - iii, d - iv
- a - iv, b - ii, c - i, d - iii
Hint:
a-iv, b-ii, c-iii, d-i
The correct answer is: a - iv, b - ii, c - iii, d - i
Oxygen is required in the cellular respiration.
Iodine is an effective antiseptic agent.
One nitrogen atom and 3 hydrogen atom makes up one atom of ammonia.
Small amount of white phosphorus is used as a rat poison.
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