Question

A passenger in an aeroplane shall(a) never see a rainbow(b) may see a primary and a secondary rainbow as concentric circles(c) may see a primary and a secondary rainbow as concentric arcs(d) shall never see a secondary rainbow

Answer 1

a is correct answer
ok

Answer 2

Explanation:

A group of atoms carrying a charge is known as polyatomic ion. Polyatomic Cation →A group of atoms carrying a positive charge is known as polyatomic cation. Example of polyatomic cation: NH4+ Polyatomic Anion→A group of atoms carrying a negative charge is known as polyatomic anion.