Tag: chemistry of non-metals

Questions Related to chemistry of non-metals

Which of the following is/are true about silver plating?

chemistry chemistry of non-metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

  1. The process of depositing a thin layer of silver electrolytically on metal surface is called silver plating.

  2. The article to be silver plated is made the anode

  3. Cathode consists of pure silver.

  4. The bath contains a solution of potassium argentocyanide $(AgNO _3+ \text { excess of KCN})$

Show answer
Correct Option: A,D
Explanation:

The following are true about silver plating.
The process of depositing a thin layer of silver electrolytically on metal surface is called silver plating.
The article to be silver plated is made the cathode.
Anode consists of pure silver.
The bath contains a solution of potassium argentocyanide $(AgNO _3+ \text { excess of KCN})$

Match List - I (Position of the Metal in the Activity Series) with the List - II (Related Reduction Process) and select the correct option using the codes given below.

List - I(Position of the Metal in the Activity Series) List - II(Related Reduction Process)
(A) The bottom of the series (I) Electrolysis
(B) The top of the series (II) Reduction by heat alone
(C) The lower regions of the series (III) Found in native state
(D) The middle of the series (IV) Reduction using carbon or some other reducing agent
chemistry chemistry of non-metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

  1. $A - II, B - III, C - IV, D - I$

  2. $A - II, B - I, C - IV, D - III$

  3. $A - III, B - I, C - II, D - IV$

  4. $A - III, B - I, C - IV, D - II$

Show answer
Correct Option: C
Explanation:

The metals which are placed high in the reactivity series are obtained by electrolysis, middle metals by reduction using carbon, lower by heating alone and metals at bottom of the series are found in native state.