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Physics 9 Chapter 6 - Work and Energy - 16
1.
As the rain water flows down, it’s which energy changes into thermal energy?
a) Kinetic energy
b) Sound energy
c) Chemical energy
d) Light energy
2.
As the rain water flows down, into which energy its kinetic energy changes?
a) Light energy
b) Chemical energy
c) Sound energy
d) Thermal energy
3.
What is the process called which is used to wash away soil particles of rocks?
a) Water erosion
b) Water logging
c) Salinity erosion
d) Soil erosion
4.
Which of the following is true statement about the inter-conversion of energy from one form to other forms?
a) Energy is destroyed
b) The total energy remains constant
c) The total energy is variable
d) None of these
5.
From where, all of the energy we get comes?
a) From biomass
b) From wind
c) From sun
d) From water
6.
Which of the following are fossil fuels?
a) All of these
b) Coal
c) Oil
d) Gas
7.
Which of the following is correct about coal?
a) They are usually nitro-carbons
b) They are usually hydrocarbons
c) They are usually nitrites
d) They are usually nitrates
8.
What are the compounds of carbon and hydrogen called?
a) Carbonates
b) Carbides
c) Hydrocarbons
d) Hydrates
9.
Which of the following is correct about oil?
a) They are usually nitrates
b) They are usually nitro-carbons
c) They are usually hydrocarbons
d) They are usually nitrites
10.
When hydrocarbons are burnt, they combine with.................?
a) Ethane
b) Oxygen
c) Methane
d) Nitrogen
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