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Oxidation and Reduction


7. 

The oxidizing agent in the following is

Answer : D. potassium dichromate

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8. 

Sodium thyosulphate is widely used in photography. Its main role in photopgraphic process is due to

Answer : A. Reduction

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9. 

Combustion is chemically is

Answer : A. decomposition

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10. 

Strong reducing agent is

Answer : A. H2S

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11. 

Silver nitrate produces a black stain on skin due to

Answer : C. its reduction to metallic silver

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12. 

Which one of the following is strong oxidizing agent

Answer : C. Acidified K2Cr2O7

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