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Physics 9 Chapter 6 - Work and Energy - 17
1.
What are hydrocarbons?
a) Compounds of carbon and sulphur
b) Compounds of carbon and oxygen
c) Compounds of nitrogen and hydrogen
d) Compounds of carbon and hydrogen
2.
Which of the following is correct about gas?
a) They are usually nitro-carbons
b) They are usually nitrates
c) They are usually nitrites
d) They are usually hydrocarbons
3.
Which of the following are hydrocarbons?
a) All of these
b) Coal
c) Oil
d) Gas
4.
In which form, energy is released during burning of oil?
a) Chemical energy
b) Heat energy
c) Sound energy
d) Light energy
5.
In case of coal, which of the following reaction takes place?
a) Carbon + Water → Carbon dioxide + heat energy
b) Carbon + Oxygen → Carbon dioxide + heat energy
c) Carbon + Water → Chloroform + heat energy
d) Carbon + Oxygen → Carbon monoxide + heat energy
6.
In which form, energy is released during burning of hydrocarbons?
a) Heat energy
b) Sound energy
c) Light energy
d) Chemical energy
7.
In case of coal, which of the following reaction takes place?
a) Hydrocarbon + Water → CCl
3
+ Water + heat energy
b) Hydrocarbon + Water → CO
2
+ Water + heat energy
c) Hydrocarbon + Oxygen → CO + Water + heat energy
d) Hydrocarbon + Oxygen → CO
2
+ Water + heat energy
8.
In which form, energy is released during burning of coal?
a) Chemical energy
b) Heat energy
c) Light energy
d) Sound energy
9.
Which of the following are non-renewable resources of energy?
a) Gas
b) Coal
c) Oil
d) All of these
10.
In which form, energy is released during burning of gas?
a) Heat energy
b) Light energy
c) Chemical energy
d) Sound energy
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