Question

18. Read the following and answer any four questions from 18 (i) to 18 (v).
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and
dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a
particular solution. The bangles sparkled like new but their weight was reduced drastically. The
lady was upset but after a futile argument, the man beat a hasty retreat.
18. (i) Which solution used to shine the gold?
(a) Copper solution
(b) Water
(c) Aqua-regia
(d) Acetic acid
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Answer 1

Answer:

18... (d) Acetic acid..........

Answer 2

Answer:

18( i ) C) Aqua Regia

18 ( ii ) d