Chemical Environmental Engineering

When the concentration of SO2 in air is greater than ______________ ppm, it gives a pungent smell?

Byadmin March 11, 2019August 29, 2021

When the concentration of SO2 in air is greater than ______________ ppm, it gives a pungent smell?

A. 0.01
B. 0.1
C. 1
D. 4

Chemical Environmental Engineering

5-200 μm size particles are called__________________?

5-200 μm size particles are called__________________?

A. Colloids or aerosols
B. Powder
C. Dust
D. Smoke

Read More 5-200 μm size particles are called__________________?
Chemical Environmental Engineering

The Killer gas which caused Bhopal gas tragedy in 1984 was________________?

The Killer gas which caused Bhopal gas tragedy in 1984 was________________?

A. Phosgene
B. Methyl isocyanate (MIC)
C. Carbon monoxide
D. Sulphur dioxide

Read More The Killer gas which caused Bhopal gas tragedy in 1984 was________________?
Chemical Environmental Engineering

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

A. 120
B. 140
C. 170
D. 200

Read More Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?
Chemical Environmental Engineering

Siderosis is a disease caused by the inhalation of ______________ dust?

Siderosis is a disease caused by the inhalation of ______________ dust?

A. Coal
B. Silica
C. Iron
D. None of these

Read More Siderosis is a disease caused by the inhalation of ______________ dust?
Chemical Environmental Engineering

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

A. Hydrogen
B. Carbon dioxide
C. Ozone
D. None of these

Read More A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?
Chemical Environmental Engineering

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

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

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