The red colour of blood is caused by a chemical called

Atria and ventricles are separated by _________.

Digestion is speeded up by chemicals called as __________.

Hair like structures present in the nasal passage ways and respiratory tract.

The enzyme responsible for the digestion of proteins.

Vocal cords are present in ___________.

The pulse is felt where a / an ___________ passes over a bone.

_____________ protein helps in clotting of blood.

The disease caused when enough insulin is not produced is ___________.

Liver produces___________.

Muscles present between each pair of ribs are called _____________ muscles.

Systematic contraction of smooth muscles in gut is called as______________

The 1 mm cube of blood contains _____________ million red blood cells.

Formula for sulphuric acid is ____________.

Positively charged particles are called ______________.

An other name for calcium carbonate is _______________ .

Bond that is formed by the sharing of electrons between two atoms:

How many elements have been discovered by scientists so far?

__________ supplies blood to the heart muscles.

The composition of carbon dioxide in exhaled air is _____________.

The inflammation of breathing tube is called as______________.

__________ acid is produced during anaerobic respiration.

Heat is a form of _____________.

The circulating flow of air is called ___________.

Heat is transferred in liquids and gases by ________.

Best conductors of heat (thermal conductors) are

Light travels fastest through a _________.

Material through which light cannot pass is called _________.

Critical angle for diamond is ______________.

There are __________ million rod cells in each eye.

A mirage is caused by ________ of light.

Which light colour will pass through a green filter.

Which of the following is an example of non luminous object.

The spectrum of white light consists of _______ colours.

_________ needs no particles / medium to transfer heat energy.