Natasha Mehta Solutions for Exercise 7: EXERCISE

Author:Natasha Mehta

Natasha Mehta Science Solutions for Exercise - Natasha Mehta Solutions for Exercise 7: EXERCISE

Attempt the practice questions from Exercise 7: EXERCISE with hints and solutions to strengthen your understanding. Sciwise - A coursebook of Science solutions are prepared by Experienced Embibe Experts.

Questions from Natasha Mehta Solutions for Exercise 7: EXERCISE with Hints & Solutions

EASY
8th CBSE
IMPORTANT

Is air a good or bad conductor of electricity? Give reasons.

EASY
8th CBSE
IMPORTANT

What would happen if the electric current is allowed to flow in a freshly cut potato?

EASY
8th CBSE
IMPORTANT

Ruchi wants to put a coating of silver on an iron spoon. She used silver nitrate solution as the electrolyte. She took a silver plate as an electrode. To which terminal of the battery should she connect the spoon and silver plate?

MEDIUM
8th CBSE
IMPORTANT

Why is electroplated jewellery in demand?

EASY
8th CBSE
IMPORTANT

Seawater is a better conductor of electricity than tap water. Why?

EASY
8th CBSE
IMPORTANT

Why are all electric wires made mostly of copper metal?

EASY
8th CBSE
IMPORTANT

The tester used by the electrician has a plastic handle. Comment.

MEDIUM
8th CBSE
IMPORTANT

Tin is electroplated on iron cans which are used to store food. Give reason.