Orthotolidine test is used for determination of________________?

Question: Noise level inside a jet air liner in normal flight is about __________ decibels.
[A].

80

[B].

100

[C].

125

[D].

145

Answer: Option B

Explanation:

No answer description available for this question.

Question: Operating principle of cyclone separator is based on the action of __________ dust particles.
[A].

diffusion of

[B].

centrifugal force on

[C].

gravitational force on

[D].

electrostatic force on

Answer: Option B

Explanation:

No answer description available for this question.

Question: Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm.
[A].

20

[B].

100

[C].

400

[D].

200

Answer: Option C

Explanation:

No answer description available for this question.

Question: Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the
[A].

forestation

[B].

rain

[C].

green house effect

[D].

vegetation

Answer: Option C

Explanation:

No answer description available for this question.