The main industrial source of emission of hydrogen sulphide air pollutant is
The main industrial source of emission of hydrogen sulphide air pollutant is
During which of the following operating conditions of an automobile, carbon mono
During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum?
Which of the following is the most efficient for removal of very finely divided
Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream?
A man exposed to excessive noise level in the working environment may suffer fro
A man exposed to excessive noise level in the working environment may suffer from
__________ is removed from water by lime-soda process.
__________ is removed from water by lime-soda process.
Water effluent generated in printing industry is decolourised by
Water effluent generated in printing industry is decolourised by
The density of the gases (present in air) decreases with increasing altitude to
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric…
There are thirteen metals which are treated as pollutants. Which of the followin
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant?
A ‘body’ which allows the short wavelength incoming solar radiation to enter in,
A ‘body’ which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation…
Direct reaction of unsaturated hydrocarbons with either NO or NO 2 produces an e
Direct reaction of unsaturated hydrocarbons with either NO or NO 2 produces an eye irritating pollutant compound known as
Which of the following causes death by asphyxiation, if its presence in atmosphe
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
Which of the following is an adsorbant for removal of nitrogen oxides from gas/a
Which of the following is an adsorbant for removal of nitrogen oxides from gas/air?