,
and a
mixture of cone.and
cone.in the
ratio of 3 : 1 were taken in test tubes labeled as A, B and C. A small piece of
metal was put in each test tube. No change occurred in test tubes A and B but
the metal got dissolved in test tube C. The metal could be
(a) Al (b)
Au (c) Cu (d)
Pt
Answer:
(b, d)A mixture of cone.
and cone.
in the
ratio of 3 :1 is known as aqua-regia. Gold (Au) and platinum (Pt) dissolve only
in aqua-regia.
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