Question

(d) Mention the most common use of this reaction is
(i) In paints and varnishes
(ii) In making of gold jewellery
(iii) To join railway tracks or cracked machine parts
(iv) In heating element of electric geysers.​

Answer 1

Answer:

in making of gold jewellery

Explanation:

hope it helps you mate ☺️

Answer 2

Answer:

in making of gold jellwellery