Chemical Engineering - Environmental Engineering

11.
In the context of the chemical process industries, the term BOD is normally associated with the
characterisation of solid wastes.
organic concentration in gaseous effluents.
characterisation of liquid effluents.
characterisation of boiler feed water.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.
85
105
125
145
Answer: Option
Explanation:
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13.
Inhalation of silica dust causes a disease called
bronchitis
silicosis
pneumoconiosis
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Solid content in most of the domestic sewage is about __________ percent.
0.001
0.1
5
10
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
t = 15 - 0.0065h
t = 15 + 0.0065h
t = 0.0035h -15
t = 15 - 0.0035h
Answer: Option
Explanation:
No answer description is available. Let's discuss.