Chemical Engineering - Environmental Engineering

6.
Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.
105
135
160
185
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.
50
500
1000
3000 (i.e. 0.3%)
Answer: Option
Explanation:
No answer description is available. Let's discuss.