Assessment

Consider the following statement.

I. Soaps are sodium or potassium salts of higher fatty acids.

II. Soaps are commonly made from coconut, groundnut and mahua oils.

III. A soap molecule has tadpole shape structure whose ends have differential polarities.

Which of the above statement (s) is/are correct?

Consider the following statements.

I. Synthetic detergents are alkyl sulphonates produced from petroleum and sulphuric acid.

II. Detergents have stronger cleansing action than soaps.

III. Mostly detergents are biodegradable.

Which of the above statement (s) is/are correct?

Thermosetting polymers can melt and take shape once after they have been solidified and they stay solid. In thermosetting process a chemical process takes place that is irreversible. Which of the following is thermosetting polymer?

This plastic is heat and wear resistant. This plastic is used to build gears, plain bearing, valve seats and seals. which of the following plastics is referred above?

Consider the following statements about glass:

I. Glass is a supercooled liquid having infinite viscosity.

II. Violet coloured glass is obtained by adding ${\mathrm{MnO}}_2$.

III. Glass is a man-made silicate.

IV. Glass is a crystalline substance.

Which of the statements given above are correct?

The principle of cleaning by soap is:

Antacids are found in drugs that give relief to:

Match the following Columns.

Codes: