Which of the following is a characteristic of a chemical change?

Which process involves the formation of new individuals from the body cells of a single parent without the involvement of gametes?

The tree which sends down roots from its branches to the soil is known as:

Electric bulb filament is made of

Brass gets discoloured in air because of the presence of which of the following gases in air?

Which of the following is a non metal that remains liquid at room temperature?

Chlorophyll is a naturally occurring chelate compound in which central metal is

Which of the following is used in pencils?

Which of the following metals forms an amalgam with other metals?

The gas usually filled in the electric bulb is