Engineer & Medical

Environmental Issues question bank (Botany)

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Q1.

Select the correct statements regarding dissolved Oxygen and Biochemical oxygen demand. (A) BOD is inversely related to dissolved oxygen. (B) Low dissolved oxygen and high BOD lead to loss of aquatic life. (C) High BOD leads to high dissolved oxygen. (D) Both BOD and dissolved oxygen are indicator of health of a water body. (E) Both BOD and dissolved oxygen are affected by amount of organic matter in the water body. Choose the most appropriate answer from the options given below :

(A)

$(A), (B), (C), (D)$ only

(B)

$(B), (C), (D), (E)$ only

(C)

$(A), (B), (C), (E)$ only

(D)

$(A), (B), (D), (E)$ only

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Q2.

Given below are two statements:

Statement I: Electrostatic precipitator is most widely used in thermal power plant.

Statement II: Electrostatic precipitator in thermal power plant removes ionising radiations.

In the light of the above statements, choose the most appropriate answer from the options given below:

(A)

Statement I is incorrect but Statement II is true.

(B)

Both Statement I and Statement II are true.

(C)

Both Statement I and Statement II are false.

(D)

Statement I is correct but Statement II is false.

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