Class 10 ICSE CHEMISTRY questions on ACIDS AND BASES - 2

Complete the following with suitable words.

1.      An acid is a compound which, when dissolved in water, gives _______________ ions as the only ___________ charged ions. A/an ______________ salt is one in which the Hydrogen of an acid has been partially replaced by a ____________.

2.      A base is a compound which if soluble in water contains _______________ ions as the only ____________ charged ions.

3.      A base reacts with an _____________ to give salt and _________ only and this type of reaction is known as _________.

4.      X and Y are two water soluble compounds and they react with each other to produce salt and water only. X turns blue litmus solution to red as it contains _____________ ions and Y must change _____________ litmus solution to ___________ colour as it contains _______________ ions. When a piece of Magnesium is added to X it gives ____________ gas.

5.      _______________ acid is formed when a non volatile acid is heated with a salt. This acid on thermal decomposition gives reddish brown vapours and is a strong _______ agent and volatile.

6.      ___________ is a weak alkali which undergoes ___________ dissociation and gives a low concentration of ___________ ions if dissolved in water and gives a pale blue precipitate with Copper sulphate solution when added in small amount. It gives a dark brown precipitate with Nesseler’s reagent as it contains ___________ ions.

7.      A dibasic acid has three/two replaceable _____________ ions and reacts with a base to form __________ salt and __________ salt.