IF ACIDIFIED POTASSIUM DICHROMATE(VI) (K2CR2O7) ACTS AS OXIDIZING AGENT, COLOR CHANGES FROM
A. yellow to green B. orange to green ✓ C. yellow to red D. orange to red The answer to the question is: B. orange to green When acidified potassium dichromate(VI) (K2Cr2O7) acts as an oxidizing agent, the color changes from orange…
WHICH OF THE FOLLOWING METALS CANNOT BE EXTRACTED FROM ITS ORE BY USING CARBON (II) OXIDE AS THE REDUCING AGENT
A. Cu B. Zn C. Al ✓ D. Pb E. Fe The answer to the question is: C. Al The metal that cannot be extracted from its ore using carbon (II) oxide as the reducing agent is aluminum. Aluminum is extracted from its ore, bauxite,…