TEST PAPER -1. (Marks=20) Time- 30 mins
a) Which of these is not a fossil fuel ?
i) coal ii) diesel iii) solar energy iv) petrol
b) Main component of biogas is
i)!methane ii) hydrogen iii) oxygen iv) Acetylene
c) Which type of natural coal has highest calorific value ?
i) Peat b) bituminous c) anthracite d) ignite
2) Fill in the blanks (any two) (1 x 2= 2)
a) formula of methane hydrate us_____
b) jet planes passes through______
c) Ozone gas prevents_____ rays of the Sun to reach Earth's surface.
3) True or False (any two) (1 x2= 2)
a) Main green house gas is methane.
b) Van Allen radiation belt is observed in mesosphere.
c) Methane hydrate mines are located below the Earth surface at the bottom of the sea.
4) Match the columns
a) Northern lights i) gasoline
b) greenhouse effect ii) non renewable energy
c) fossil fuel iii) thermosphere
d) geothermal energy iv) global warming
5) Answer any 6 (1 x 6= 6)
a) Which is the main greenhouse gas.
b) Write one harmful effect of rising temperature of Earth.
c) Name an energy source used for sustainable development.
d) Write the SI unit of the calorific value of fuels.
e) Which layer of atmosphere has an northern lights ?
f) How ozone layer is formed?
g) Name four fossil fuels.
6) Answer any two (2 x 2= 4)
a) Which layer of atmosphere has highest pressure. Give reason ?
b) Write two possibile effects of global warming on future generations.
c) Describe the steps to be taken to reduce greenhouse gas expulsion.
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