The gas 'A' is having very low reactivity reaches to stratosphere. It is non-toxic and non-flammable but dissociated by UV-radiations in stratosphere. The intermediates formed initially from the gas 'A' are :
02Easy92×since 2004Q1013
The smog is essentially caused by the presence of :
03Easy92×since 2004Q1014
Identify the pollutant gases largely responsible for the discoloured and
lustreless nature of marble of the Taj Mahal.
04Easy92×since 2004Q1015
The higher concentration of which gas in air can cause stiffness of flower buds?
05Easy92×since 2004Q1016
Taj Mahal is being slowly disfigured and discoloured. This is primarily due to :
06Easy92×since 2004Q1017
The molecule that has minimum /no role in the formation of photochemical smog, is :
07Easy92×since 2004Q1018
Excessive release of CO₂ into the atomosphere
results in :
08Easy92×since 2004Q1019
Air pollution that occurs in sunlight is :
09Easy92×since 2004Q1020
The correct set of species responsible for the photochemical smog is :
10Easy92×since 2004Q1021
The primary pollutant that leads to photochemical smog is :
11Easy92×since 2004Q1022
Peroxyacetyl nitrate (PAN), an eye irritant is produced by :
12Easy92×since 2004Q1023
Thermal power plants can lead to :
13Medium92×since 2004Q1024
The incorrect statement(s) among (a) – (d)
regarding acid rain is (are) :
(a) It can corrode water pipes.
(b) It can damage structures made up of stone.
(c) It cannot cause respiratory ailments in animals.
(d) It is not harmful for trees
14Easy92×since 2004Q1025
The statement that is not true about ozone is :
15Medium92×since 2004Q1026
Given below are two statements :
Statement I : An allotrope of oxygen is an important intermediate in the formation of reducing smog.
Statement II : Gases such as oxides of nitrogen and sulphur present in troposphere contribute to the formation of photochemical smog.
In the light of the above statements, choose the correct answer from the options given below :
16Easy92×since 2004Q1027
The presence of ozone in troposphere :
17Easy92×since 2004Q1028
The type of pollution that gets increased during the day time and in the presence of O₃ is :
18Easy92×since 2004Q1029
Reducing smog is a mixture of :
19Medium92×since 2004Q1030
Given below are two statements :
Statement I : Chlorofluoro breakdown by radiation in the visible energy region and release chlorine gas in the atmosphere which then reacts with stratospheric ozone.
Statement II : Atmospheric ozone reacts with nitric oxide to give nitrogen and oxygen gases, which add to the atmosphere.
For the above statements choose the correct answer from the options given below :
20Medium92×since 2004Q1031
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Photochemical smog causes cracking of rubber.
Reason (R) : Presence of ozone, nitric oxide, acrolein, formaldehyde and peroxyacetyl nitrate in photochemical smog makes it oxidizing.
Choose the most appropriate answer from the options given below :