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)
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