Question

From the list given below, select the word(s) required to correctly complete the blanks (i) to (v) in the following passage:
Note: words chosen from the list are to be used only once. Write only the answers. Do not copy the passage. [reddish brown, ammonium, nitrogen dioxide, hydroxyl, dirty green, ammonia, acidic, alkaline]
Nitrogen and hydrogen combine in the presence of a catalyst to give (i) ________ gas. When the above mentioned gas is passed through water it forms a solution which will be (ii) ________ in nature and the solution contains (iii) ______ ions and (iv) _______ ions. The above solution when added to iron (II) sulphate solution gives a (v) _______ coloured precipitate of iron (II) hydroxide.

Answer 1

Nitrogen and hydrogen combine in the presence of a catalyst to give (i) ammonia gas. When the above mentioned gas is passed through water it forms a solution which will be (ii) alkaline in nature and the solution contains (iii) hydroxyl ions and (iv) ammonium ions. The above solution when added to iron (II) sulphate solution gives a (v) dirty green coloured precipitate of iron (II) hydroxide.