Curioustab

Home » Chemical Engineering » Environmental Engineering

Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.

low amount of excess combustion air
large quantity of excess combustion air
hydrocarbon fuel
pulverised coal as fuel

Correct Answer: low amount of excess combustion air

← Previous Question Next Question→

More Questions from Environmental Engineering

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
Insufficient washing of sand grains in a rapid sand filter causes
Out of the following, TLV of __________ is maximum (about 500 ppm).
Reingleman chart is used for the evaluation of __________ pollution.
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
Carcinogenic air pollutants cause
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
Noise level in a quiet private business office is about __________ decibels.
A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion