LUYỆN TẬP 1

WHAT DOES THE SOIL CONTAIN?

• A. MINERALS

• B. OXGEN

• C. ORGANIC MATTER

• D. ALL OF THE ABOVE

WHICH OF THE FOLLOWING PROVES THAT SOIL CONTAINS AIR?

• A. SOIL SUPPORTS AND HELPS TREES STAND STEADILY.

• B. SOME ANIMALS LIKE EARTHWORMS CAN LIVE UNDERGROUND.

• C. PLANTS CAN GROW ON SOIL.

• D. SOIL BECOMES DRY UNDER SUNLIGHT.

WHICH OF THE FOLLOWING ONLY CONTAINS SUDTANCES THAT ARE SOLUBE IN WATER?

• A. SALT AND SUGAR

• B. SUGAR AND SAND

• C. SAND AND SALT

• D. SAND AND COOKING OIL

WHICH OF THE FOLLOWING SUBSTANCES IS ABSORBENT?

• A. GLASS

• B. COTTON

• C. PLASTIC

• D. RUBBER

AIR CONSISTS MAINLY OF ...............

• A. NITROGEN

• B. OXYGEN

• C. CARBON DIOXIDE

• D. HELIUM

WHICH TYPE OF FABRIC CAN BE USED IN MEDICAL APPLICATIONS SUCH AS ARTIFICIAL BLOOD VESSELS?

• A. COTTON

• B. SILK

• C. WOOL

• D. NYLON

Choose the INCORRET statement ?

• A. Air is important to maintain life on Earth.

• B. There is no air in soil and water.

• C. We cannot see burn anything without oxgen.

• D. We cannot see the air around us.

Which of the following is NOT a common (chung) property of water and air?

• A. Colourless and odourless

• B. Does not have a difinite shape

• C. Can be compressed

• D. All of the above

WHICH OF PROCESS(ES) CAN CHANGE A MATERIAL FROM LIQUID TO GAS?

• A. Only evaporation

• B. Only boiling

• C. Evaporation and boiling

• D. Evaporation, boiling and melting

WHICH PROCESS NEEDS A DEFINITE TEMPERATURE TO OCCUR?

• A. EVAPORATION

• B. BOILING

• C. CONDENSATION

• D. ALL OF THE ABOVE