Chemistry Question Bank

The chemical entities present in thermosphere of the atmosphere (EAMCET 2009) (a)O2 +, O+, NO+

DDT residues are rapidly passed through food chain causing biomagnification because DDT is (AIPMT 2009)

Antidote for carbon monoxide is/are (CG PMT, Haryana PMT 2009)

Photochemical smog is caused due to the presence of (Kerala CEE2009)

Assertion (A): London smog is oxidising in nature. Reason (R): London smog contains O3, NO2 and hydrocarbons. (AIIMS2009)

5L aqueous solution is kept in the presence of oxygen and suitable microorganism for five days at 20°C. If the O2 consumed is 0.2g, the BOD value of the sample is (EAMCET 2008)

The process of ‘eutrophication’ is due to the (Kerala CEE 2008)

Freon gas causing stratospheric ozone depletion is mainly released from : (WB CET 2008)

Green chemistry means such reactions which : (AIPMT 2008)

Which of the following reaction(s) is/are happen during the formation of O3 layer in stratosphere ? (a) UV O (g) O(g)+O(g) -> (b) UV O(g)+O (g) (g)O (g) (c) UV O (g) O2(g)+O(g)

The disease caused by UV radiation(s) in human is/are: I. Melanoma (skin cancer) II. Heart attack III. Hypertension IV. Cough cold

Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2

Point out the plants which are most effective for controlling of photochemical smog ?

Catalytic converters are used to control…A… Here, A refers to.

Which of the following is/are the primary precursor(s) of the photochemical smog?

Which of the following components of photochemical smog act as powerful eye irritiants? I. O3 II. PAN III. Hydrocarbon

Which of the following is/are common components of photochemical smog?

Which of the following are involved in the formation of PAN? I. NO2 II. O3 III. Unburnt hydrocarbon IV. CO2

Which of the following options represents the PAN?

Photochemical smog has …I… concentration of oxidising agents and is therefore, called as …II… smog. Here, I and II refer to :

Classical smog is also called …A…smog. Here A refers to

Carbon monoxide is mainly released into air by :

Classical smog is a mixture of

The word smog stands for :

Which of the following is the major particulate matter emitted by vehicles.