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Objective Questions
GS
GS Set-1
Chemistry
Inorganic Chemistry
170

Inorganic Chemistry MCQ with Answers

170) Which of the following metals is obtained by leaching out process using a solution of NaCN and then precipitating the metal by addition of zinc dust?

Copper

Silver

Nickel

Iron

Answer is:

Silver

Inorganic Chemistry MCQ with Answers

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171) Mercury (I) chloride sublimes, when this compound is heated and the vapours it gives off are cooled, the substance collected consists of:

Mercury (II) chloride

Mercury (I) and mercury (II) chlorides

Mercury (II) chloride and mercury

Mercury

Answer is:

Mercury

172) Which one of the following compounds does not decolourise an acidified aqueous solution of KMnO₄?

Sulphur dioxide

Ferric chloride

Hydrogen peroxide

Ferrous sulphate

Answer is:

Ferric chloride

Explanation:

Ferrous salts decolourise an acidified solution of KMnO₄.

173) Which one of the following statements is wrong?

An acidified solution of K₂Cr₂O₇ liberates iodine from iodides

In acidic solution, dichromate ions are converted to chromate ions

Ammonium dichromate on heating, undergoes exothermic decomposition to give Cr₂O₃

Potassium dichromate is used as a titrant for Fe²⁺ ions

Answer is:

In acidic solution, dichromate ions are converted to chromate ions

Explanation:

In acidic soluiton, chromate is converted to dichromate.

174) Addition of iron fillings to CuSO₄ solution caused precipitation of Cu, owing to the:

Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Answer is:

Reduction of Cu²⁺

Inorganic Chemistry MCQ with Answers

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170) Which of the following metals is obtained by leaching out process using a solution of NaCN and then precipitating the metal by addition of zinc dust?

Silver

Inorganic Chemistry MCQ with Answers

Related Inorganic Chemistry MCQ with Answers

171) Mercury (I) chloride sublimes, when this compound is heated and the vapours it gives off are cooled, the substance collected consists of:

Mercury

172) Which one of the following compounds does not decolourise an acidified aqueous solution of KMnO4?

Ferric chloride

173) Which one of the following statements is wrong?

In acidic solution, dichromate ions are converted to chromate ions

174) Addition of iron fillings to CuSO4 solution caused precipitation of Cu, owing to the:

Reduction of Cu2+

Inorganic Chemistry MCQ with Answers

172) Which one of the following compounds does not decolourise an acidified aqueous solution of KMnO₄?

174) Addition of iron fillings to CuSO₄ solution caused precipitation of Cu, owing to the:

Reduction of Cu²⁺