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Give a scientific reason.
Power generation plant based on natural gas is eco-friendly.
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Even today there is a need for movements like 'Chipko' movement. Explain this with the help of an example that you have experienced.
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What is the full form of UNEP?
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Complete the following table taking into account the relation between the entries in three columns:
| Air pollution | Water pollution | Soil pollution | |
| Components | Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc. |
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| Source | Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture. |
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| Effect | Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc. |
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Name the act under which trading of rare animals has been completely banned.
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Why is there a need for conservation of the environment?
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Complete the following conceptual picture:
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What are the different types of air pollutants?
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Give two sources of air pollution.
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Mention one measure to control air pollution.
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Match the correct pair:
| Column 'A' | Column 'B' | ||
| (1) | Forest Conservation Act |
(a) | 1986 |
| (b) | 1980 | ||
| (c) | 1970 |
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Write four adverse effects of radiations on human body.
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Write any four important facts which must be thought over while considering the scope of disaster.
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Name the following:
Main ore of aluminium.
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…………. is not essential for photosynthesis.
(a) Oxygen
(b) Carbon dioxide
(c) Light
(d) Chlorophyll
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In the extraction of aluminium: Name the process of concentration of bauxite.
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Considering the relationship in the first pair, complete the second pair:
Root : Vegetative propagation : : Flower : ____________
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The process of absorption of water into raisins occurs through its membranes. This process is known as ______________.
(a) Absorption
(b) Osmosis
(c) Adsorption
(d) Diffusion
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In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
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In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
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