Curioustab

Home » Chemical Engineering » Environmental Engineering

Beyond what concentration of H2S in air, acute danger to human life exists?

50 ppm
100 ppm
300 ppm
700 ppm

Correct Answer: 700 ppm

← Previous Question Next Question→

More Questions from Environmental Engineering

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

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion