Question

_____ is obtained when wood is heated in the absence of air.

2. The earth is surrounded by a thick layer of air called the _________.

3. Fast moving air is called __________.

4. CNG mainly contains __________ gas
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Answer 1

Answer:

1 charcoal

2 atmosphere

3 wind

4 ?

Answer 2

Answer:

1. Charcoal

2. Atmosphere

3. Wind

4. Methane

Explanation:

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