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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Ozone is present as a chief constituent in which region of the atmosphere?

  • Troposphere

  • Stratosphere

  • Mesosphere

  • Thermosphere


2.

The gas leaked from a storage tank of the Union Carbide plant in Bhopal tragedy was

  • Methyl isocyanate

  • Methylamine

  • Ammonia

  • Ammonia

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3.

A water sample has ppm level concentration of following anions

F-= 10; SO42- =100; NO3-= 50

the anion/anions that make/makes the water sample unsuitable for drinking is /are:

  • only NO3-

  • both 2 SO4- and NO3-

  • only F– 

  • only F– 

1043 Views

4.

Identify the wrong statements in the following:

  • Chlorofluorocarbons are responsible for ozone layer depletion

  • Greenhouse effect is responsible for global warming

  • Ozone layer does not permit infrared radiation from the sun to reach the earth

  • Ozone layer does not permit infrared radiation from the sun to reach the earth

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5.

The smog is essentially caused by the presence of

  • O2 and O3

  • O3 and N2

  • Oxides of sulphur and nitrogen

  • Oxides of sulphur and nitrogen

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6.

The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3 (PO4)2.Ca(OH)2] to

  • [3{Ca(OH)2}. CaF2]

  • [CaF2]

  • [3(CaF2). Ca(OH)2]

  • [3Ca3(PO4)2. CaF2]


7.

Among the following, the one which is not a "green house gas", is

  • N2O

  • CO2

  • CH4

  • O2


8.

Metal ion responsible for the Minimata disease is

  • Co2+

  • Hg2+

  • Cu2+

  • Zn2+


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9.

The ozone layer forms naturally by

  • the interaction of CFC with oxygen

  • the interaction of UV radiation with oxygen

  • the interaction of IR radiation with oxygen

  • the interaction of oxygen and water vapour


10.

The chemical entities present in thermosphere of the atmosphere are

  • O2+, O+, NO+

  • O3

  • N2, O2, CO2, H2O

  • O3, O2+, O2


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