Q37 of 270 Page 80

Write any two important uses of bases.

Sodium hydroxide is used to make paper, detergents and soap. Potassium hydroxide is used in farming to make acidic soil more alkaline so that plants will grow better in it.

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37 What type of ions are formed:

(i) when an acid is dissolved in water?


(ii) when a base (or alkali) is dissolved in water?

 37 Write the neutralization reaction between acids and bases in terms of the ions involved. 38 What happens when zinc granules are heated with sodium hydroxide solution? Write equation of the reaction which takes place. 38 What happens when bases react with non-metal oxides? Explain with the help of an example. What does this reaction tell us about the nature of non-metal oxides?