19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Assertion (A): Nitrogen oxides are one of the components of photochemical smog. Reason (R): Vehicular pollution is a major source of nitrogen oxides (AIIMS 2013)
Which one of the following is not a common component of photochemical smog? (CBSE AIPMT 2014)
Among the following, the one which is not a ‘greenhouse gas’, is (Kerala CEE 2014)
Assertion: (A) London smog is produced when carbon soot particles combine with gaseous oxides of sulphur. Reason: Presence of carbon particles and SO2 makes it reducing in nature. (AIIMS 2017)
Which of the following is a sink for CO? (NEET 2017)
Which of the following chemicals are used to manufacture methyl isocyanate that caused “Bhopal tragedy”? (JIPMER 2018) (i) Methylamine (iii) Phosgene (iii) Phosphine (iv) Dimethylamine
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity? (NEET 2018)
Among the following, the one that is not a greenhouse gas is (NEET 2019)
Assertion: Photochemical smog results from the action of sunlight on NOx and hydrocarbons. Reason: It occurs in warm, dry and sunny climate. (AIIMS 2019)
Which of the following statement is NOT true about acid rain? (NEET 2020)
The incorrect statement about carbon monoxide is (NEET 2020)
Match list-I with list-II (NEET 2021) List – I List – II (a) 2SO g O g 2SO g -> (i) Acid rain (b) hv HOCl g OH Cl -> (ii) Smog (c) CaCO H SO CaSO H O CO -> (iii) Ozone depletion (d) hv NO g NO g O g -> …
The pollution due to oxides of sulphur gets enhanced due to the presence of:
Use of chlorofluorocarbon is not encouraged because (KCET 2005)
Which of the following are the harmful effect of nitrogen dioxide? I. It retards the rate of photosynthesis II. It causes respiratory disease in children III. It is toxic to living tissues.
Which of the following statement(s) is//are true about carbon monoxide?
Carbon monoxide is mainly released into air by :
What is true about CO gas?
In blood, when concentration of carboxyhaemoglobin reaches about 3-4%, the oxygen carrying capacity of blood …A… Here, A refers to
In pregnant women who have the habit of smoking the increased CO level in blood may induce harmful effects like :
Content of CO2 present in atmosphere is :
Green plants require CO2 for
Which of the following gases cause global warming ? I. CO2 II. O3 III. CO IV. Chlorofluorocarbons (a)I, II and III
In cold places flowers, vegetables and fruits are grown in glass covered areas called …A…here A refers to :
The smog is essentially caused by the presence of : [Guj. CET 2004]