Acid rain happens because

Monjur Alahi

(a) sun leads to heating of upper layer of atmosphere
(b) burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
(c) electrical charges are produced due to friction amongst clouds
(d) earth atmosphere contains acids


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Salim Ahmed Kawsar

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(b) burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere

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What is acid rain?

Rain water having a pH of less than 5.6 is called acid rain.

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Name the chemical responsible for acid rain?

Oxide of Sulphur, Oxide of Nitrogen.

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Name the two gases given out by burning of fossil fuels, which dissolves in rain to form acid rain.

Sulphur dioxide (SO2) and oxides of nitrogen (NO2).

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What happens when rain falls on soil without vegetational cover?

Correct answer is (b) Rain water causes loss of surface soil 

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What happens when peroxydisulphuric acid is hydrolysed with water?

Sulphuric acid and hydrogen peroxide is obtained

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What happens when BORIC acid is heated?

H3BO3 → HBO2 → H2B4O7

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Paheli had heard that rain water is as good as distilled water. So, she collected some rain water in a clean glass tumbler

Rainwater contains dissolved salts. This makes it a conducting solution. There are no dissolved salts present in the distilled water. Hence, rainwater can allow electricity to pass through it while...

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Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean. Explain how it happens?

Hint: Snow/Rain→Streams/Rivers→Sea/Ocean.

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When rain is accompanied by a thunderstorm, the collected rain water will have a pH value.

(a) : Due to thunderstorm, temperature increases. As temperature increases, [H+] also increases, hence pH decreases.

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Identify the wrong statement in the following. (a) Acid rain is mostly because of oxides of nitrogen and sulphur.

(d) : The thick layer of ozone called ozoneplanket which is effective in absorbing harmful ultraviolet rays given out by the sun acts as a protective shield. It does not...

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