Name the product when iodine is heated with concentrated `HNO_(3)`.

Name the products formed when copper is heated with concentrated sulphuric acid.

Name the product when zinc is reacted with very dilute HNO_(3) acid.

Before adding the reagents of group III, the solution is heated with some concentrated HNO_(3) in order to :

Before adding the reagents of group III, the solution is heated with some concentrated HNO_(3) in order to :

Name the organic product formed when chloroalkane is heated with concentrated solution of sodium iodide (Nal) in acetone.

When copper is heated with conc. HNO_(3) it produces