19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In an automobile engine, (at high temperature) when fossil fuel is burnt, N2 and O2 combine to yield :
Which of the following pollutant(s)catalyse(s) the oxidation of sulphur dioxide to sulphur trioxide?
Which of the following diseases is caused due to SO2?. I. Digestive diseases II. Asthma III. Bronchitis IV. Emphysema
SO2 gas is poisonous to:
Which of the following are major gaseous pollutants present in the troposphere? I. H2S II. Oxides of sulphur, nitrogen and carbon III. O3
What do you mean by Taj-Trapezium?
The viable particulate stand for : I. Minute living organisms present in atmosphere II. Minute non-living particles present in atmosphere
Which of the following is not a viable particulates :
Non-viable particulates are classified on the basis of :
Mist is produced by : I. Particles of spray liquids II. Condensation of vapour in air
Herbicides and insecticides are travel through air and form …A… Here A refers to:
The effect of particulate pollutants are largely dependent on the …A… Here, A refers to.
Which of the following is the major particulate matter emitted by vehicles.
The word smog stands for :
Which of the following is responsible for damaging Tajmahal and other monuments near Agra ?
Classical smog is a mixture of
Classical smog is also called …A…smog. Here A refers to
Photochemical smog has …I… concentration of oxidising agents and is therefore, called as …II… smog. Here, I and II refer to :
Which of the following options represents the PAN?
Which of the following are involved in the formation of PAN? I. NO2 II. O3 III. Unburnt hydrocarbon IV. CO2
Which of the following is/are common components of photochemical smog?
What is the cell reaction occurring in Daniell cell (Galvanic cell)? (a) Cu s ZnSO aq CuSO aq Zn s -> (b) Zn s CuSO aq Cu s ZnSO -> (c) Ni s ZnSO aq NiSO s Zn s -> (d) 2Na s CdSO aq Na SO aq…
Which cell converts electrical energy into chemical energy?
Standard electrode potential for Sn4+/Sn2+ couple is +0.15 V and that for the Cr3+/Cr couple is –0.74V. These two couples in their standard state are connected to make a cell. The cell potential will be: [AIPMT 2011]
Cr O 14H 6e 2Cr 7H O; -> E 1.33V. At [Cr O ]l 4.5 millimoles, [Cr3+] = 15 millimoles, E is 1.067 V. The pH of the solution is nearly equal to [KCET 2016]