General Science #17 Multiple Choice Questions

GENERAL SCIENCE #17

MULTIPLE CHOICE QUESTIONS

1. What is called the chain of small chemical units combined to form a large unit?

(a) Polymer

(b) Polythene

(c) Poly

(d) None of the above

Answer: (a)

2. Polythene and PVC are examples of which of the following?

(a) Thermosetting plastics

(b) Rayon

(c) Thermoplastics

(d) Bio degradable substance

Answer: (c)

3. What is the kind of plastics which when moulded once cannot be softened by heat?

(a) Thermoplastics

(b) Polyester

(c) Polythene

(d) Thermosetting plastics

Answer: (d)

4. Polycot is made by mixing which of the following two types of fibre?

(a) Polythene and cotton

(b) Silk and polyester

(c) Silk and cotton

(d) Polyester and cotton

Answer: (d)

5. What is the 4R Principle?

(a) Reduce, Reuse, Recycle, Recover

(b) Remember, Reduce, Recycle, Rejoice

(c) Repeat, Rejoice, Recycle, Reduce

(d) None of the above

Answer: (a)

6. Which of the following is an example of natural polymer?

(a) Nylon

(b) Cellulose

(c) Rayon

(d) None of the above

Answer: (b)

7. Which of the following is non-biodegradable?

(a) Cotton cloth

(b) Plastic bag

(c) Wood

(d) Woollen clothes

Answer: (b)

8. Bakelite and melamine are examples of which of the following?

(a) Thermosetting plastics

(b) Nylon

(c) Rayon

(d) Silk

Answer: (a)

9. Fire proof plastic uniform worn by fire fighters has a coating of which of the following to make it fire resistant?

(a) Rayon

(b) Silk

(c) Melamine plastic

(d) Nylon

Answer: (c)

10. The coating on modern non-stick cookware and electric iron is of which of the following?

(a) Rayon

(b) Polyester

(c) Terrycot

(d) Teflon

Answer: (d)

11. What is called the property of metals by which they can be beaten into thin sheets?

(a) Sheetability

(b) Metallic

(c) Ductility

(d) Malleability

Answer: (d)

12. What is called the property of metals by which it can be drawn into wires?

(a) Ductility

(b) Malleability

(c) Metallic

(d) Sheetability

Answer: (a)

13. Which of the following metal is found in liquid state?

(a) Aluminium

(b) Gold

(c) Mercury

(d) Iron

Answer: (c)

14. When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The green material is a mixture of which of the following?

(a) Copper carbonate and copper sulphate

(b) Copper hydroxide and copper carbonate

(c) Copper hydroxide and copper nitrate

(d) Copper oxide and copper nitrate

Answer: (b)

15. What is formed when sulphur dioxide is dissolved in water?

(a) Sulphoxy acid

(b) Sulphur trioxide

(c) Sulphurous acid

(d) Sulphuric acid

Answer: (c)

16. Sodium metal is stored in which of the following?

(a) Kept under open air

(b) Alcohol

(c) Water

(d) Kerosene

Answer: (d)

17. Phosphorous is stored in which of the following?

(a) Water

(b) ) Kerosene

(c) Alcohol

(d) Kept under open air

Answer: (a)

18. Since metal produce ringing sounds, they are said to be which of the following?

(a) Ring metal

(b) Sonorous

(c) Malleable

(d) Sound metal

Answer: (b)

19. What is called the substance which cannot be broken down further by chemical reactions, by cooling, heating, or by electrolysis?

(a) Compound

(b) Metal

(c) Non-metal

(d) Element

Answer: (d)

20. Which of the following materials are not sonorous and are poor conductors of heat and electricity?

(a) Metals

(b) Non-metals

(c) Elements

(d) Compounds

Answer: (b)