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प्रश्न
Distinguish between the following pair:
Conventional and Non-conventional sources of energy.
उत्तर
Conventional sources of energy: Conventional energy sources, such as fossil fuels and cow dung cake, can be used over time for heat, light, electricity, and food production.
Non-conventional sources of energy: Non-conventional energy sources, such as solar and wind, leave no residue after consumption.
संबंधित प्रश्न
Define the following:
Deforestation
Present human population growth is following arithmetic progression.
Explain briefly the idea contained in the following statement. There will be increasing dependence on sources of energy other than coal and petroleum in the future.
Coal and iron are inexhaustible resources.
Petroleum is a resource of the same category as that of ______.
List any three consequences of high population density.
What was directly responsible for the rapid rise of world population in the twentieth century?
Match the terms given in column A with those in column B.
| Column A | Column B | ||
| (a) | Forest | (i) | Arithmetic progression |
| (b) | Food | (ii) | Geometric progression |
| (c) | Population | (iii) | Deforestation |
| (d) | Coal | (iv) | Afforestation |
| (e) | Flash floods | (v) | Renewable source of energy |
| (vi) | Non-renewable source of energy |
Given below is a set of paired terms. The first pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Cutting down of forests : Deforestation :: Planting more trees : ______.
What do you mean by the 3Rs in the context of sustainable development?
