CHEMISTRY [1 Mark Question Answer]

Wire gauze helps in heating glass apparatus evenly and therefore, reducing the chances of breakage. Hence, it is placed under glass apparatus when heated.

Basic building materials such as cement, mortar, bricks, steel, paints, varnishes, etc. are manufactured by chemical processes.

A variety of products obtained from petroleum are called petrochemicals. They include petrol, diesel, kerosene, LPG, pesticides, plastics, etc.

Chemistry is a branch of physical science that deals with the characteristics and composition of all substnaces along with the changes they can undergo.

Conical flask – Conical flask is used for mixing or stirring liquids.

Measuring cylinder – Measuring cylinder is used to measure the volume of liquids.

Beaker – Beaker is used for stirring, mixing and heating substances,

Test tube – Test tube is used for carrying out chemical tests and for heating solids or liquids.