Ncert Exercises & Solutions

Match the soaps given in Column I with items given in column II.

Column I Column II

A. Soap chips 1. Dried miniature soap bubbles

B. Soap granules 2. Small broken pieces of soap formed from melted soaps

C. Soap powder 3. Soap powder + abrasives+builders ( ${Na}_{2} {CO}_{3}, {Na}_{3} {PO}_{4}$ )

D. Scouring soap 4. Soap powder + builders like ${Na}_{2} {CO}_{3}, and {Na}_{3} {PO}_{4}$

Codes

A B C D

1. 2 1 3 4

2. 3 1 5 2

3. 5 4 3 2

4. 4 3 2 1

Hint: Soap chips are made by running a thin sheet of melted soap onto a cool cylinder and scraping off the soaps in small broken pieces.

A. Soap chips are made by running a thin sheet of melted soap into a cool cylinder and scraping off the soaps in small broken pieces.

B. Soap granules are dried miniature soap bubbles.

C. Soap powders contain soap powder and builders like sodium carbonate and trisodium phosphate. Builders make the soap act more rapidly.

D. Scouring soaps contain soap powder, a scouring agent (abrasive) such as powdered pumice, or finely divided sand and builders.