Please select a subject first
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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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In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
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In the extraction of aluminium: Why is it necessary to replace anodes time to time?
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Which aspects will you check for pre-disaster management in your school?
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Answer the questions with the help of picture.
A) Which type of energy is produced?
B) This power plant is based on which energy source?
C) Is this power plant eco-friendly? How?
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Solve the following crossword puzzle.
a. Maximum energy generation in india is done using..... energy.
b. ...... energy is a renewable source of energy
c. Solar energy can be called.... energy.
d .... energy of wind is used in wind mills.
e. ..... energy of water in dams is used for generation of electricity.
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