7.
The oxidizing agent in the following is
Answer : D. potassium dichromate
8.
Sodium thyosulphate is widely used in photography. Its main role in photopgraphic process is due to
Answer : A. Reduction
9.
Combustion is chemically is
Answer : A. decomposition
10.
Strong reducing agent is
Answer : A. H2S
11.
Silver nitrate produces a black stain on skin due to
Answer : C. its reduction to metallic silver
12.
Which one of the following is strong oxidizing agent
Answer : C. Acidified K2Cr2O7