Assertion :Chemosynthetic autotrophic bacteria oxidise various inorganic substances. Reason: Energy released during oxidation is used in ATP production.

If both assertion and reason are true and reason is the correct explanation of assertion.

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If both assertion and reason are true but reason is not the correct explanation of assertion.

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If assertion is true but reason is false.

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If both assertion and reason are false.

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Solution

The correct option is B If both assertion and reason are true but reason is not the correct explanation of assertion.
Chemosynthetic autotrophic bacteria use inorganic molecules as a source of energy and convert them into organic substances by oxidation. These bacteria use inorganic substances because of the absence of sunlight. The energy released during this reaction is used in the production of ATP. Thus, the assertion and reason are true but the reason is not the correct explanation of assertion.
So, the correct answer is (B).

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Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

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