Question

(by slow
2. Multiple choice questions:
1. Combustion occurs readily in the presence of:
(a) nitrogen
(b) oxygen
(c) carbon dioxide (d) none of these
2. The mixing of carbon monoxide with the blood inside our body leads to
(a) formation of carbon dioxide
(b) carbon monoxide poisoning
(c) stopping of supply of oxygen
(d) (a) and (c)
3. The burning of wood, coal, candle, etc., represents
combustion.
(a) rapid
(c) spontaneous (d) none of these
4. Coke is an example of
fuel.
(a) gaseous
(b) liquid
(c) solid
(d) it is not a fuel
5. Which of the following types of fuel leaves residue after burning?
(ay Solid fuel (b) Liquid fuel
(c) Gaseous fuel (d) All of these
6. Which of the following is the most useful form of coal containing more than 90% carbon?
(a) Bituminous coal (b) Anthracite
(c) Lignite
(d) None of these
Very short answer questions:
1. Coal is a fossil fuel made of carbon
2
and
and
are obtained from petroleum.
All substances that contain carbon are combustible. True or false?
5. Wood is a better fuel than wood charcoal no
hydrogen and orygon
3.​

Answer 1

Answer:

I don't no the answer for your question

Answer 2

Answer:

1 oxygen

2stopping supply of oxygen

3 combustion

4 solid

5 solid fuel

6 anthracite

hope it will help you

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