Which of the following key(s) can be used to cancel the

Heat stored in water vapour is –

Quantum Theory was discovered by?

The device used for locating submerged objects under sea is –

Panchayat was added to our constitution through which amendment? 

What is the colour of neutral wire?

1) Red

2) Green

3) Black

4) Yellow

Which Instrument is used to measure depth of ocean?

Quantum Theory was discovered by 

Which metal exhibits the highest electrical conductivity among the following?

One Kilowatt hour is equal to—