Question

combustion
E. FILL IN THE BLANKS
1. Generally, fire in a coal mine is a kind of
2. A good fuel has a
calorific value.
3. Acid rain is caused due to dissolved oxides of
4. Burning of fuels leads to
pollution
5. Water, glass, steel are
substances
and
STATE TRUE OR FALSE​

Answer 1

answer of number 4 is true

Answer 2

Answer:

question no. 4 is true.

Explanation:

because when we burn the fuel they produce harnful gases which pollute our surrounding