MCQ
A neutral atom (Atomic no. $> 1$ ) consists of
- AOnly protons
- BNeutrons + protons
- CNeutrons + electrons
- ✓Neutron + proton + electron
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
(Round off to the Nearest Integer).
[Use : $\sqrt{3}=1.73, h =6.63 \times 10^{-34} Js$ $m _{ e }=9.1 \times 10^{-31} kg ; c =3.0 \times 10^{8} ms ^{-1}$ $\left.1 eV =1.6 \times 10^{-19} J \right]$

Statement $I:$ Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement $II:$ The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below :