Air Pollution and its Control
BIOXII16: ENVIRONMENTAL ISSUES

345351 Often in water bodies subjected to sewage pollution, fishes die because of the

1 Reduction of dissolved oxygen caused by microbial activity
2 Foul smell
3 High amounts of oxygen
4 Fishes flourish only in purified water
BIOXII16: ENVIRONMENTAL ISSUES

345352 What is being depicted in the graph?
supporting img

1 Greenhouse gases
2 Mineral rich sea water
3 BOD
4 Oligotrophic pond
BIOXII16: ENVIRONMENTAL ISSUES

345353 Waste from industries contain heavy metals whose density may be

1 \( < 5 \mathrm{~g} / \mathrm{cm}^{3}\)
2 \(>5 \mathrm{~g} / \mathrm{cm}^{3}\)
3 \(>5 \mathrm{mg} / \mathrm{cm}^{3}\)
4 \( < 5 \mathrm{mg} / \mathrm{cm}^{3}\)
BIOXII16: ENVIRONMENTAL ISSUES

345354 Choose the correct pair.

1 Algae - scum
2 Ecosan - decreases the growth of water hyacinth
3 Typhoid- pathogenic virus
4 Algae growth - terror of Bengal
BIOXII16: ENVIRONMENTAL ISSUES

345355 Statement A :
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Statement B :
Biomagnification happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII16: ENVIRONMENTAL ISSUES

345351 Often in water bodies subjected to sewage pollution, fishes die because of the

1 Reduction of dissolved oxygen caused by microbial activity
2 Foul smell
3 High amounts of oxygen
4 Fishes flourish only in purified water
BIOXII16: ENVIRONMENTAL ISSUES

345352 What is being depicted in the graph?
supporting img

1 Greenhouse gases
2 Mineral rich sea water
3 BOD
4 Oligotrophic pond
BIOXII16: ENVIRONMENTAL ISSUES

345353 Waste from industries contain heavy metals whose density may be

1 \( < 5 \mathrm{~g} / \mathrm{cm}^{3}\)
2 \(>5 \mathrm{~g} / \mathrm{cm}^{3}\)
3 \(>5 \mathrm{mg} / \mathrm{cm}^{3}\)
4 \( < 5 \mathrm{mg} / \mathrm{cm}^{3}\)
BIOXII16: ENVIRONMENTAL ISSUES

345354 Choose the correct pair.

1 Algae - scum
2 Ecosan - decreases the growth of water hyacinth
3 Typhoid- pathogenic virus
4 Algae growth - terror of Bengal
BIOXII16: ENVIRONMENTAL ISSUES

345355 Statement A :
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Statement B :
Biomagnification happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII16: ENVIRONMENTAL ISSUES

345351 Often in water bodies subjected to sewage pollution, fishes die because of the

1 Reduction of dissolved oxygen caused by microbial activity
2 Foul smell
3 High amounts of oxygen
4 Fishes flourish only in purified water
BIOXII16: ENVIRONMENTAL ISSUES

345352 What is being depicted in the graph?
supporting img

1 Greenhouse gases
2 Mineral rich sea water
3 BOD
4 Oligotrophic pond
BIOXII16: ENVIRONMENTAL ISSUES

345353 Waste from industries contain heavy metals whose density may be

1 \( < 5 \mathrm{~g} / \mathrm{cm}^{3}\)
2 \(>5 \mathrm{~g} / \mathrm{cm}^{3}\)
3 \(>5 \mathrm{mg} / \mathrm{cm}^{3}\)
4 \( < 5 \mathrm{mg} / \mathrm{cm}^{3}\)
BIOXII16: ENVIRONMENTAL ISSUES

345354 Choose the correct pair.

1 Algae - scum
2 Ecosan - decreases the growth of water hyacinth
3 Typhoid- pathogenic virus
4 Algae growth - terror of Bengal
BIOXII16: ENVIRONMENTAL ISSUES

345355 Statement A :
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Statement B :
Biomagnification happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
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BIOXII16: ENVIRONMENTAL ISSUES

345351 Often in water bodies subjected to sewage pollution, fishes die because of the

1 Reduction of dissolved oxygen caused by microbial activity
2 Foul smell
3 High amounts of oxygen
4 Fishes flourish only in purified water
BIOXII16: ENVIRONMENTAL ISSUES

345352 What is being depicted in the graph?
supporting img

1 Greenhouse gases
2 Mineral rich sea water
3 BOD
4 Oligotrophic pond
BIOXII16: ENVIRONMENTAL ISSUES

345353 Waste from industries contain heavy metals whose density may be

1 \( < 5 \mathrm{~g} / \mathrm{cm}^{3}\)
2 \(>5 \mathrm{~g} / \mathrm{cm}^{3}\)
3 \(>5 \mathrm{mg} / \mathrm{cm}^{3}\)
4 \( < 5 \mathrm{mg} / \mathrm{cm}^{3}\)
BIOXII16: ENVIRONMENTAL ISSUES

345354 Choose the correct pair.

1 Algae - scum
2 Ecosan - decreases the growth of water hyacinth
3 Typhoid- pathogenic virus
4 Algae growth - terror of Bengal
BIOXII16: ENVIRONMENTAL ISSUES

345355 Statement A :
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Statement B :
Biomagnification happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII16: ENVIRONMENTAL ISSUES

345351 Often in water bodies subjected to sewage pollution, fishes die because of the

1 Reduction of dissolved oxygen caused by microbial activity
2 Foul smell
3 High amounts of oxygen
4 Fishes flourish only in purified water
BIOXII16: ENVIRONMENTAL ISSUES

345352 What is being depicted in the graph?
supporting img

1 Greenhouse gases
2 Mineral rich sea water
3 BOD
4 Oligotrophic pond
BIOXII16: ENVIRONMENTAL ISSUES

345353 Waste from industries contain heavy metals whose density may be

1 \( < 5 \mathrm{~g} / \mathrm{cm}^{3}\)
2 \(>5 \mathrm{~g} / \mathrm{cm}^{3}\)
3 \(>5 \mathrm{mg} / \mathrm{cm}^{3}\)
4 \( < 5 \mathrm{mg} / \mathrm{cm}^{3}\)
BIOXII16: ENVIRONMENTAL ISSUES

345354 Choose the correct pair.

1 Algae - scum
2 Ecosan - decreases the growth of water hyacinth
3 Typhoid- pathogenic virus
4 Algae growth - terror of Bengal
BIOXII16: ENVIRONMENTAL ISSUES

345355 Statement A :
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Statement B :
Biomagnification happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.