Oxidation-Reduction Reactions Quiz

What is the color change observed when chlorine water is added to potassium bromide solution?

• Colorless to brown

• Colorless to orange

• Brown to colorless

• Orange to colorless

What color change is observed when chlorine water is added to potassium iodide solution?

• Colorless to reddish-brown

• Brown to reddish-brown

• Reddish-brown to colorless

• Reddish-brown to brown

What is the color of the organic layer when cyclohexane is added to the test tube containing iodine solution?

• Violet

• Brown

• Pale yellow

• Reddish

What precipitate forms when sodium sulfite solution is mixed with barium chloride solution?

• White

• Yellow

• Brown

• Green

What color precipitate forms when chlorine water is added to sodium sulfite solution?

• Brown

• Yellow

• Green

• White

What is the color of the precipitate formed when dilute sodium hydroxide solution is added to acidified iron ii sulfate solution?

• Blue

• Greenish brown

• Yellow

• Red

What metal is deposited when zinc is added to copper sulfate solution?

• Copper

• Iron

• Zinc

• Silver

What metal has a greater tendency than copper to lose electrons in the reaction with magnesium metal and copper sulfate?

• Copper

• Magnesium

• Zinc

• Iron