Q6 of 59 Page 1

"Burning fossil fuels results in global warming". Give reasons to justify this statement.

Burning of fossil fuels causes global warming as when they are burnt, they generates various gases such C02, CO, water vapours, S02, oxides of nitrogen. Carbon dioxide traps sun’s heat energy falling of the surface of Earth and results in green house effect leading to global warming.


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Name the type of mirrors used in the design of solar furnaces. Explain how high temperature is achieved by this device.

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"What was Chipko Andolan"? How did this Andolan ultimately benefit the local people and the environment?

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Write chemical equation of the reaction of ethanoic acid with the following:

(a) Sodium; (b) Sodium hydroxide; (c) Ethanol


Write the name of one main product of each reaction.

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An aldehyde as well as a ketone can be represented by the same molecular formula, say C3H60.Write their structures and name them. State the relation between the two in the language of science.