The thickness of smoke can be measured by Liegean's sphere, One of the following is the SO2 pollution indicator Garden-pea

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Free Online Mock Biology Multiple Choice Test on Organism and Environment

Sub Category : Organism and Environment	Test : 3	Time Left :
1. Which is not a harmful trace metal?
(1) Cadmium (2) Yttrium (3) Beryllium (4) None of these.
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2.Which is not physiological manifestion of sound pollution?
(1) Increase in rate of heart beet (2) Constriction of blood vessels (3) Dilation of pupil of eye (4) None of these.
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3.The thickness of smoke can be measured by
(1) Deposit gauge (2) Liegean's sphere (3) Percentage of carbon (4) All of these.
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4.The dreadful British among of 1952 contained?
(1) SO2 (2) SO3 (3) Both of these (4) None of these.
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5.Which one of the following is the SO2 pollution indicator??
(1) Lichens (2) Garden-pea (3) Both of (1) and (2) (4) None of these.

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Free Online Mock Biology Multiple Choice Test on Organism and Environment