Halogens and Their Reactions with Water

Which halogens are known to be bleaching agents when dissolved in water?

• Chlorine and iodine

• Bromine and iodine

• Chlorine and bromine

• Iodine only

What happens to the solubility of halogens in water as you move down the group?

• It fluctuates

• It remains the same

• It decreases

• It increases

Which halogen does not act as a bleaching agent?

• All of the above

• Iodine

• Bromine

• Chlorine

What is the main product when potassium manganate reacts with hydrochloric acid?

• Potassium chloride

• All of the above

• Manganese chloride

• Chlorine gas

What are the products when chlorine reacts with water?

• Hydrochloric acid and hypochlorous acid

• Hydroiodic acid and hypoiodous acid

• None of the above

• Hydrobromic acid and hypobromous acid

Which of the following is a strong bleaching agent?

• None of the above

• Hypoiodous acid

• Hypobromous acid

• Hypochlorous acid

What is the color change observed in litmus paper when exposed to a solution of bromine in water?

• Blue to green, then bleached

• No color change

• Blue to red, then bleached

• Red to blue, then bleached

What is the effect of hypobromous acid on litmus paper?

• Turns blue to red, then bleaches

• Turns red to blue, then bleaches

• No effect

• Turns blue to green, then bleaches

Which acid is formed when iodine reacts with water?

• Hypochlorous acid

• Hydroiodic acid

• Hydrobromic acid

• Hydrochloric acid

What is the color of the solution formed when iodine dissolves in water?

• Green

• Colorless

• Brown

• Yellowish