Assertion: Excess of sulphur reaches to reservoir pool.
Reason: Thiobacillus and Desulpho vibrio convert elemental sulphur into the sulphate.

Options

A. If both the assertion and the reason one true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

c

Explanation

Some bacteria and fungi can chagne `H_(2)S` and elemental sulphur to sulphate state (e.g., beggiotoa,Thiobacillus, penicilium, Nevrospora). Reverse can also occur (e.g., Aerobacter, Desulpho vibrio) Leaching Delsulpho vibiro bacteria are ecologicaly importnat, becaue they give `SO_(4)` in deep segments and in anoxic waters, such as the Black Sea to `H_(2)S` gas and precipitation of sulphur take out some sulphur from circulating pool and convert into part of reservoir pool.