The country is _______ by fractions(tear)

While dividing a fraction by another fraction, we _________ the first fraction by the _______ of the other fraction.

Fraction and Types of Fraction

The glands related to lubrication and tear production are

The molecular formulae for phosgene and tear gas are _______ and ________ respectively.

Lysozyme found in saliva, persipiration and tears , destroys