WritingLaw (Page 246)

147. When witness to be compelled to answer.
If any such question relates to a matter relevant to the suit or proceeding the provisions of Section 132 shall apply thereto.

148. Court to decide when question shall be asked and when witness compelled to answer.
If any such question relates to matter not relevant to the suit or proceeding, except in so far it affects the credit of the witness by injuring his character, the Court shall decide whether or not the witness shall be compelled to answer it and may, if it thinks fit, warn the witness that he is not obliged to answer it. In exercising its discretion the Court shall have regard to the following considerations-

(1) Such questions are proper if they areKEEP READING

Refreshing Memory. 157. Former statements of witness may be proved to corroborate later testimony as to same fact.
In order to corroborate the testimony of a witness, any former statement made by such witness relating to the same fact, at or about the time when the fact took place, or before any authority legally competent to investigate the fact, may be proved.

158. What matters may be proved in connection with proved statement relevant under Section 32 or 33.KEEP READING

167. No new trail for improper admission or rejection of evidence.
The improper admission or rejection of evidence shall not be ground of itself for a new trail or reversal of any decision in any case, if it shall appear to the Court before which such objection is raised that, independently of the evidence objected to and admitted, there was sufficient evidence to justify the decision, or that, if the rejected evidence had been received, it ought not to have varied the decision.KEEP READING