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प्रश्न
What is biogas? How is it useful to us?
उत्तर
Animal waste and all other kinds of organic waste material generated by households each day converted into biogas. This gas is an excellent source of cheap power for small-scale usage.
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संबंधित प्रश्न
Discuss the ways by which you can conserve energy, especially petroleum and electricity, in your homes and school. What changes do you need to make in your daily routine to save these precious resources?
Hydroelectricity is considered a good energy option for the future. Why?
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Make a list of five different ways in which you can save electricity, for instance, switching off fans, ACs, light at home, and in school when these things are not required.
Fill in the blank
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Choose the correct answer.
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On the outline map of India given here, mark and name any five hydroelectric projects in India.
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Each city has a different source for its water supply like reservoirs, rivers, or wells. Find out where your town or city gets its supply of water from.
