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प्रश्न
Complete the crossword puzzle with the help of clues given below :
Across
1. Pollutant which was used in refrigerators and air conditioners. (18)
3. Produced on incomplete combustion of fuels (14)
6. This chemical protects our crops and is washed into water bodies from the field. (9)
Down
2. This layer protects us from harmful ultraviolet rays. (5)
4. It is essential for combustion. (6)
5. Disease which is caused by drinking contaminated water. (7)
7. River which is famous in India and sustains most of the northern, central and eastern Indian population. (5)
उत्तर
Across
1. Chlorofluorocarbon
3. Carbon monoxide
6. Pesticide
Down
2. Ozone
4. Oxygen
5. Cholera
7. Ganga
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संबंधित प्रश्न
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An undesirable change in the environment is called as ______.
