The main directory of a disk is called the .…

Tear gas used by the police to disperse the mob contains –

Which of the following is an example of a chemical change?

Which of the following is a renewable energy source?

A cylindrical metal wire is reformed so that its length decreases by 20% with no change of volume. Its

resistance decreases by:

Food cans are coated with tin and NOT zinc because ________.

A plane electromagnetic wave travels in vacuum along the z-direction. If the frequency of the wave is 20 MHz, what is its wavelength?

What is the chemical symbol for Gold? 

Which property of iron metal is utilised in producing iron sheets required for making buckets?

During the fermentation of sugar, the compound which is always formed is…………?

Addition of ethylene dibromide to petrol