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(A): Photo chemical smog is Oxidising in...

(A): Photo chemical smog is Oxidising in nature
(R): Photo chemical smog is formed due to the combustion of coal and petroleum products

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

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Which of the following chemicals is NOT involved in photochemical smog formation

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The chemical substance of photochemical smog responsible for eye irritation is

Which of the following statements about smog is/are correct ? (i) Smog formed on sunny days contains oxidising molecules. (ii) Photochemical smog contains many reactive molecules. (iii) The main polluting components of smog are oxides of carbon. (iv) The presence of carbon monoide in air leads to the formation of ozone in smog.

Nitric oxide (NO) is the nucleus of photochemical smog. 2NO(g) + O_(2) ("air") rarr 2NO_(2) (g) NO_(2)(g) overset("Sunlight")(rarr) NO(g) + [O] [O] + O_(2) (g) rarr O_(3)(g) Both NO_(2) and O_(3) are strong oxidising agents and react with unburnt hydrocarbons in the polluted air to produce formaldehyde, acrolein and peroxyacetyl nitrate (PAN). These products are harmful to the plant and animal life. Catalytic converters are now installed in the automobiles to reduce the photochemical smog. Photochemical smog can also be supressed by certain compounds, which act as free radical trap. Smog is common pollutant in places having :

AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-OBJECTIVE EXERCISE - 3
  1. 10^(-3) gm equivalents of K(2) Cr(2) O(7) in 50% H(2) SO(4) is needed...

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  2. Green house gases radiate back the following radiations to the earth s...

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  3. (A): Photo chemical smog is Oxidising in nature (R): Photo chemical...

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  4. In the treatment of domestic sewage water, the weight of oxygen that c...

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  5. Which of the following is not the effect of acid rain

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  6. The BOD values of four samples of water A,B,C and D are 165 ppm. 120pp...

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  7. When rain is accompanied by a thunderstorm, the collected rain water w...

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  8. Which of the following reaction causes depletion of ozone layer in sum...

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  9. A sample of pond water contains 40mg of organic matter requires 32mg o...

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  10. Nerve toxins are

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  11. Which is incorrectly matched ?

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  12. Modes of controlling pollution in large cities include

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  13. TLV values of four pollutants A,B,C and D are 2ppm, 9 ppm, 20 ppm and ...

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  14. 100 ml of sample of water requires 3.92 mg of K2 Cr2O3 in presence of ...

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  15. COD of a water sample is 8ppm the weight of acidified K(2)Cr(2) O(7) r...

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  16. Proper management of disposal of household and industrial wastes can b...

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  17. Incomplete combustion of petrol in automobile engines can be detected ...

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  18. Among the oxides of nitrogen, a brown coloured gas is

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  19. The compound used as refrigerant is

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  20. Poisonous gas present in the exhaust fumes of car is

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