Question

4. Proton
V. Pick the odd one out. Give scientific reason for your answer.
1. Copper, mercury, china clay, water solution of acids
2. Electron, proton, nucleus, neutron
3. Metal disc, cork, gold strips, silk thread
Understanding Ideas​

Answer 1

1. China clay

Reason:- Because copper Mercury and water solution of acids ola homogeneous mixture while China clay is a heterogeneous mixture.

Answer 2

Answer:

1. China clay because others are homogeneous mixture while china clay is a heterogeneous mixture.

2. Nucleus because it's mixture of protons and neutron but others are subatomic particle.

3. Silk thread because others are used to make a gold-leaf electroscope but silk thread is used in pith-ball electroscope.

See the above image to understand number 3.