Gold cannot be extracted from an alloy using nitric acid.

True

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False

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Solution

The correct option is B
False

Nitric acid will not dissolve gold, but it will dissolve most of the other metals.

It can be used to dissolve the non-gold portion of the alloy, leaving the gold behind.

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Similar questions

Assertion:- An alloy of gold with copper or silver is used to make ornaments.

Reason:- Pure gold is soft due to which it cannot be not used to make ornaments.

Q. Give reasons for the following:
(i) In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
(ii) Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
(iii) Aluminium does not react with nitric acid of any concentration.
(iv) Conc. nitric acid renders iron passive.
(v) Nitric acid is used in purification of gold.
(vi) Aqua regia dissolves gold and platinum.
(vii) Nitric acid usually does not yield hydrogen from acids.
(viii) Lightning is a blessing in disguise.
(ix) Concentrated nitric acid is brown in colour.
(x) Concentrated nitric acid is a stronger oxidizing agent.

To make a mixture which can dissolve gold, nitric acid and hydrochloric acid are to be mixed in the ratio 3 : 1. With 12 milliliters of hydrochloric acid, how much nitric acid should be mixed?

Q. An alloy of gold and copper weights 50 g. It contains 80% gold. How much gold should be added to the alloy so that percentage of gold is increased to 90?

Gold is extracted from its ore using cynaide process followed by electrolysis.

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Gold cannot be extracted from an alloy using nitric acid.

The correct option is B False Nitric acid will not dissolve gold, but it will dissolve most of the other metals. It can be used to dissolve the non-gold portion of the alloy, leaving the gold behind.

The correct option is B
False

Nitric acid will not dissolve gold, but it will dissolve most of the other metals.

It can be used to dissolve the non-gold portion of the alloy, leaving the gold behind.