Quarter 4

1

Industrial waste water should be:

A Released directly B Heated C Treated before disposal D Stored permanently

2

Fractional distillation of petroleum separates components based on:

A Density B Melting point C Boiling point D Solubility

3

Acid rain is mainly caused by oxides of:

A Nitrogen and sulphur B Carbon and hydrogen C Oxygen and nitrogen D Chlorine and fluorine

4

Which nutrient is mainly required for energy?

A Proteins B Carbohydrates C Vitamins D Minerals

5

Lipids are insoluble in:

A Alcohol B Ether C Chloroform D Water

6

Which carbohydrate is found in animal liver and muscles?

A Starch B Cellulose C Glycogen D Sucrose

7

Which of the following is a thermoplastic polymer?

A Bakelite B Polythene C Melamine D Epoxy

8

Which polymer is commonly used in water pipes?

A Polythene B PVC C Nylon D Teflon

9

Which polymer is used to make plastic bags?

A Nylon B Polythene C Bakelite D Teflon

10

Which biomolecule provides structural support in plants?

A Starch B Glycogen C Cellulose D Sucrose

11

Lactose is found in:

A Milk B Fruits C Sugarcane D Wheat

12

Which of the following best describes polymers?

A Low molecular weight compounds B Simple salts C Long-chain molecules D Metal alloys

13

Which polymer is a protein?

A Starch B Cellulose C Enzyme D Rubber

14

Which nutrient regulates body processes?

A Carbohydrates B Proteins C Vitamins D Fats

15

Which lipid is hormone-like in function?

A Waxes B Phospholipids C Steroids D Triglycerides

16

Water pollution is caused by:

A Industrial waste B Agricultural runoff C Domestic sewage D All of these

17

Which nutrient provides insulation to the body?

A Proteins B Carbohydrates C Lipids D Vitamins

18

Which polymer is used for packaging food?

A Polythene B Rubber C Nylon D Bakelite

19

Which process releases energy from food?

A Anabolism B Catabolism C Photosynthesis D Absorption

20

The pH value of a neutral solution is:

A 0 B 5 C 7 D 14

21

Petroleum is a mixture of:

A Pure hydrocarbons B Single compound C Various hydrocarbons D Salts and acids

22

Which polymer is used for making electrical insulation?

A PVC B Rubber C Nylon D Cellulose

23

Which polymer is used to make plastic bottles?

A PET B PVC C Nylon D Teflon

24

The raw material for urea manufacture includes:

A Ammonia and carbon dioxide B Nitrogen and oxygen C Sulphur dioxide D Methane only

25

Which factor affects enzyme activity?

A Temperature B pH C Substrate concentration D All of these