19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Assertion :According to kinetic theory of gases, gas molecules occupy some space. Reason :Gases can be liquefied and solidified.
Assertion: For a real gas, the gas pressure is always less than the pressure calculated from kinetic theory of gases. Reason: In kinetic theory, both molecular volumes and intermolecular attractions were ignored.
Assertion: Compressibility factor (Z) for non- ideal gases may be less than or greater than 1. Reason: Non-ideal gases always exert higher pressure than expected.
Assertion:CH4, CO2 has value of Z (compressibility factor) less than one at 0ºC. Reason :Z < 1 is due to the attractive forces dominate among the molecules.
Assertion :Gases do not liquefy above their critical temperature, whatever the high pressure is applied. Reason :Above critical temperature, molecular speed is high and intermolecular force cannot hold the molecules t…
Assertion :Above critical temperature liquid state cannot be observed. Reason :Above critical temperature, the average kinetic energy of a molecule is always greater than the maximum kinetic energy a molecule can poss…
The density of neon will be highest at
In a mixture of gases, the pressure exerted by the individual gas is called
A gaseous mixture is the mixture of 2 moles of A and 3 moles of B. Total pressure of the mixture is 5 atm. What is the partial pressure of A and B respectively?
Which of the following interrelation with our surroundings are included in environmental studies?
The gas responsible for ozone depletion
The region which is greatly affected by air pollution is
Presence of which fuel gas in the exhaust fumes shows incomplete combustion of fuel
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)
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)