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Physics 9 Chapter 6 - Work and Energy - 22
1.
What is plant wastes called that can be burnt as fuel?
a) Biomass
b) Salinity
c) Magma
d) Dung
2.
What are animal wastes called that can be burnt as fuel?
a) Biomass
b) Magma
c) Dung
d) Salinity
3.
Which of the following is NOT a biomass?
a) Animal wastes
b) None of these
c) Plant wastes
d) Garbage
4.
Which of the following are the forms of biomass?
a) Sugar cane wastes
b) All of these
c) Garbage
d) Farm wastes
5.
When animal dung decomposes, they give off a mixture of.........................?
a) Ethane and carbon monoxide
b) Ethane and carbon dioxide
c) Methane and carbon dioxide
d) Methane and carbon monoxide
6.
When dead plants decompose, they give off a mixture of.........................?
a) Methane and carbon dioxide
b) Ethane and carbon monoxide
c) Methane and carbon monoxide
d) Ethane and carbon dioxide
7.
When dead animals decompose, they give off a mixture of.........................?
a) Methane and carbon dioxide
b) Methane and carbon monoxide
c) Ethane and carbon monoxide
d) Ethane and carbon dioxide
8.
Who predicted the inter-conversion of matter and energy?
a) Einstein
b) Newton
c) Pascal
d) Archimedes
9.
Write down the relation between mass m and energy E?
a) E = mc
b) E = mc
-2
c) E = mc
2
d) E = mc
3
10.
Write down the Einstein’s mass-energy equation?
a) E = mc
3
b) E = mc
c) E = mc
-2
d) E = mc
2
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