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Chemical Environmental Engineering

The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

Chemical Environmental Engineering /
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

A. Ionosphere
B. Troposphere
C. Stratosphere
D. None of these

The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________? Read More »

Chemical Environmental Engineering

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?

Chemical Environmental Engineering /
TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?

A. Skin disorder
B. Bronchitis
C. Bone disease
D. Cancer

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________? Read More »

Chemical Environmental Engineering

A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called___________________?

Chemical Environmental Engineering /
A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called___________________?

A. Cesspool
B. Lagoon
C. Skimming mill
D. Septic tank

A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called___________________? Read More »

Chemical Environmental Engineering