Atoms and Molecules — Science STD 10 — Question

_____ is the substance whose physical property is utilised for measuring temperature.

_____ is a substance added to the ore to reduce the fusion temperature and to remove impurities.

The glandular follicles of the thyroid gland are filled with colloid material called _____.

A ray parallel to the principal axis of a convex lens after refraction passes through …………

During whitewashing, ______ reacts slowly with carbon dioxide in the air to form a thin layer of _______ on the walls.

Plant ______ is the art of developing economically important plants.

To produce an acceleration of 1 m/s² in an object of mass 1 kg. The force required is ……… and for 3 kg of mass to produce same acceleration, the force required is ……….

On heating in air, iron forms ______.

A molecule is a combination of two or more atoms held together by _____.

______ provides mechanical support to plants.