Q. The gas essential for life is

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Q. SO₂ in atmosphere is converted into

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Q. Underground or surface water is treated because it is

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Q. A hole used to dump the municipal wastes is called

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Q. Components of environment necessary for sustaining life are

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Q. The drops of rain fall down due to density than air

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Q. These have maximum density

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Q. Mass per unit volume is called

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Q. To maintain the electrical neutrality, we use

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Q. The conversion of chemical energy into electrical energy requires

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Q. The combustion of carbon in oxygen is an example of

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Q. Reduction or oxidation potential of standard hydrogen electrode is

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Q. Human blood has a pH of

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Q. The example of solid solute in gaseous solvent is

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Q. Cell potential depends upon

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Q. A process which takes place on its own without any outside assistance is called

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Q. Small quantity of HCl is present in

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Q. By mixing together substances of all the three states of matter, different types of solutions can be

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Q. The pH of soft drink is

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Q. Almost forward reaction is completed when the value of Kc is

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