Calcium oxide reacts vigorously with water to produce:

  • A
    Calcium oxide and hydrogen with a release of large amount of heat.
  • B
    Calcium hydroxide absorbing a large amount of heat.
  • C
    Calcium hydroxide releasing a large amount of heat.
  • D
    Calcium oxide and hydrogen with the absorption of large amount of heat.

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Similar Questions

Give the characteristic tests for the following gases:
$(a)$ $O_2$
$(b)$ $H_2$

Which of the following gases can be used for the storage of a fresh sample of an oil for a long time?

Why is a combustion reaction considered an oxidation reaction?

$(a)$ Classify the following chemical reactions as exothermic or endothermic:
$(i)$ Electrolysis of water
$(ii)$ Burning of natural gas
$(iii)$ Decomposition of calcium carbonate
$(iv)$ Burning of magnesium ribbon in air.

Give reasons for the following:
$(i)$ All decomposition reactions are endothermic reactions.
$(ii)$ Colour of copper sulphate solution changes when an iron nail is dipped in it.
$(iii)$ Respiration is an exothermic reaction.

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