Question:
Immersion rods for heating liquids are made up of metallic
substances.
Answer:
Metals are good conductors of heat and electricity. Therefore,
immersion rods for heating liquids are made of metallic substances.
Q 5.
One day Reeta went to a jeweller's shop with her mother. Her
mother gave an old gold jewellery to the goldsmith to polish. Next
day when they brought the jewellery back, they found that there was
a slight loss in its weight. Can you suggest a reason for the loss in
weight?