Explain the following observation:
Aerated water bottles are kept under water during summer.

Why are aerated water bottles kept under water during summer?

Account for the following observations: Hard water doesn't give ready lather with soap.

Explain water gas shift reaction.

Which of the following are soluble in water?

Which of the following is soluble in water?

Which of the following are insoluble in water?

Account for the following observations: i) The density of ice is lower than that of water. ii) Hard water doesn't give ready lather with soap.

Explain the following statements giving appropriate reasons. i) Sea water doesn't form lather with soap.

Which of the following is water soluble?