Name one solvent for chlorophyll, coal tar, common salt, paint, and sucrose. State two functions of blood and name two types of simple machine. Define pollution.

Here are the answers to the questions:

1. a) Name one solvent for each of the following substances:

   • (i) Chlorophyll: Alcohol (Ethanol)
   • (ii) Coal tar: Benzene
   • (iii) Common salt: Water
   • (iv) Paint: Turpentine
   • (v) Sucrose: Water

2. b) State two functions of blood:

   • (i) Transports oxygen from the lungs to the body tissues.
   • (ii) Transports nutrients to the body cells.

3. c) Name two types of simple machine:

   • (i) Lever
   • (ii) Pulley

4. a) (i) Define pollution. Pollution is the introduction of harmful substances or products into the environment, causing adverse effects on living organisms and the ecosystem.