What is the process of removal of topsoil by the action of wind and water called?
- ASoil erosion
- BFossilization
- CLeaching
- DCalcification
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Which of the following belongs to secondary air pollutants?
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View SolutionWhich of the following is/are estimated by titrating polluted water with potassium dichromate solution in acidic medium?
$COD$ $BOD$ $DO$ $I$ $II$ $III$
| $COD$ | $BOD$ | $DO$ |
|---|---|---|
| $I$ | $II$ | $III$ |
Match the items in Column-$I$ with the compounds in Column-$II$.
Column-$I$ Column-$II$ $(A)$ Acid rain $(1)$ $CHCl_2-CHF_2$ $(B)$ Photochemical smog $(2)$ $CO$ $(C)$ Combination with hemoglobin $(3)$ $CO_2$ $(D)$ Depletion of ozone layer $(4)$ $SO_2$ $(5)$ Unsaturated hydrocarbons
| Column-$I$ | Column-$II$ |
| $(A)$ Acid rain | $(1)$ $CHCl_2-CHF_2$ |
| $(B)$ Photochemical smog | $(2)$ $CO$ |
| $(C)$ Combination with hemoglobin | $(3)$ $CO_2$ |
| $(D)$ Depletion of ozone layer | $(4)$ $SO_2$ |
| $(5)$ Unsaturated hydrocarbons |
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View SolutionClassical smog is a mixture of .....
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View SolutionWhat are the adverse effects if industrial and domestic solid waste is not disposed of properly?
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