MHT CET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

The oxidation state of sulphur in $H_{2} S_{2} O_{7}$ is

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Correct Answer

(A) 4

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Detailed explanation

Antibiotics which kill or inhibit a wide range of gram positive and gram negative bacteria are called broad spectrum antibiotics. Among the given options, penicillin is not a broad spectrum antibiotics. It is a narrow spectrum antibiotics i.e. it is effective mainly against specific families of bacteria.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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The oxidation state of sulphur in H2S2O7 is

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The oxidation state of sulphur in $H_{2} S_{2} O_{7}$ is