Q1. Why do we add little dilute sulphuric acid to copper sulphate solution during electroplating?
(a) to increase acidity
(b) to increase conductivity

Q2. In which of the following current is not conducted by electrons?
(a) mercury
(c)common salt

Q3. Why is it important to prepare the surface before beginning electroplating?

Dear student

answer to question 1 is (b) to increase conductivity

answer ro question 2 is (c) common salt in which current is conducted by flow of ions

it is important to prepare surface before beginning because sometimes there is contamination on the surface that could lead to bad electroplating

with regards

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