Question

Explore and answer :

Based on the property of conduction of current, find the odd one out:
i. silver, platinum, sodium, wood
ii. plastic, matchstick, paper, safety pin
iii. salt solution, pure water, lemon juice, hydrochloric acid

Answer 1

i) Wood as it is only insulator all other are conductor with free electron.

ii) Safety pin as only this will conduct the current as it is a conductor all other are insulator and does not conduct.

iii)Pure water as it does not have any electrotype as free atoms to conduct electricity as the electricity in water is conducted by minerals as electrotypes in water.