19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
‘Good ozone’ is found in the (AIPMT Mains 2011)
Which of the following statements is not true ? (AIPMT 2011)
Excess nitrate in drinking water can cause (Kerala CEE 2011)
Eutrophication is due to (AMU 2011) (a) SO ion present in water
Photochemical smog is caused by light mediated reaction between : (AIPMT 2012)
Which one of the following statements regarding photochemical smog is not correct? (CBSE, AIPMT 2012)
BOD stands for (AMU 2012)
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity? (NEET 2018)
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 of the following is a sink for CO? (NEET 2017)
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)
Among the following, the one which is not a ‘greenhouse gas’, is (Kerala CEE 2014)
Which one of the following is not a common component of photochemical smog? (CBSE AIPMT 2014)
Assertion (A): CO and NO combine with haemoglobin. Reason (R): Both have equal affinity for haemoglobin. (AIIMS 2012)
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 statements is not true? (Karnataka NEET 2013)
The pollution due to oxides of sulphur gets enhanced due to the presence of:
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 incorrect statement about carbon monoxide is (NEET 2020)
Which of the following statement is NOT true about acid rain? (NEET 2020)
Assertion: Photochemical smog results from the action of sunlight on NOx and hydrocarbons. Reason: It occurs in warm, dry and sunny climate. (AIIMS 2019)
Among the following, the one that is not a greenhouse gas is (NEET 2019)
The equivalent conductance of M / 32 solution of a weak monobasic acid is 8.0 mho cm2 eq–1and at infinite dilution is 400 mho cm2 eq–1. The dissociation constant of this acid is [CBSE AIPMT 2010]
The conductivity of 0.20 M KCl solution at 298 K is 0.0248 S cm–1. What will be molar conductivity? [Haryana PMT 2010] (a)124 S cm2 (b)124 S cm–1 (c)124 S ohm–1 cm2 equiv–1 (d)124 S cm2 mol–1
When iron is rusted, it is [MP PMT 2010]