GENERAL SCIENCE #12
MULTIPLE CHOICE QUESTIONS
1. The
state of thermal equilibrium between two bodies is characterized by which of
the following properties?
(a) Thermal capacity
(b) Temperature
(c) Heat
(d) Specific heat
Answer:
(b)
2. Why
water is used in hot water bottles?
(a) It is cheap
(b) It has low specific heat
(c) It is easily available
(d) It has high specific heat
Answer:
(d)
3. Which
object is used to see the level of sea?
(a) Microphone
(b) Radar
(c) Periscope
(d) Microscope
Answer:
(c)
4. Which
object is used for the measurement of temperature?
(a) Thermometer
(b) Pyrometer
(c) Barometer
(d) Voltmeter
Answer:
(a)
5. A
shooting star that flasher across the sky in the night is really a ……………..
(a) falling star
(b) comet
(c) meteor
(d) falling planet
Answer:
(b)
6. In
a colour television set, the pictures of which one of the following sets of
colours is superimposed to generate true colour picture?
(a) Red, green and blue
(b) Red, yellow and green
(c) Blue, yellow and red
(d) Yellow, green and blue
Answer:
(a)
7. An
ideal gas is one which obeys ……………..
(a) Gas law
(b) Charles’s law
(c) Avogadro’s hypothesis
(d) Boyle’s law
Answer:
(a)
8. The
largest number of molecules is in ……………
(a) 46 g of C2H5OH
(b) 54 g of N2O5
(c) 36 g of H2O
(d) 28 g of CO2
Answer:
(c)
9. What
is the total number of electrons present in one molecule of carbon dioxide?
(a) 66
(b) 88
(c) 22
(d) 44
Answer:
(c)
10. Number
of molecules in one litre of oxygen at STP is ……………..
(a) 6.02 x 1023 / 22.4
(b) 6.02 x 1023 / 32
(c) 32 x 22.4
(d) 6.02 x 103 / 32
Answer:
(d)
11. When
salt is dissolved in water there is ……………..
(a) decrease of boiling point
(b) an increase of boiling point
(c) no change in boiling point
(d) None of the above
Answer:
(b)
12. Liquid
dispersed in gas is called which of the following?
(a) Aerosol
(b) Solid fame
(c) Solution
(d) Solid solution
Answer:
(a)
13. Which
form of the matter has highest density?
(a) Solid
(b) Gas
(c) Liquid
(d) All of the above
Answer:
(a)
14. Circulatory
system ……………
(a) helps to burn food
(b) gives message to the body
(c) makes the food into simple form
(d) None of the above
Answer:
(d)
15. Digestive
system ……………
(a) helps to burn food
(b) makes the food into simple form
(c) gives oxygen to the body
(d) None of the above
Answer:
(b)
16. The
brain ……………
(a) helps to breathe in air
(b) is the main control centre of the body
(c) pumps blood to all parts of the body
(d) None of the above
Answer:
(b)
17. The
skin is ……………
(a) breathing organ
(b) sense organ
(c) excretory organ
(d) None of the above
Answer:
(b)
18. The
master control centre of the human body is in ……………
(a) brain
(b) liver
(c) heart
(d) stomach
Answer:
(a)
19. Which
of the following is called the complete food?
(a) Vegetable
(b) Milk
(c) Chapati
(d) Cereal
Answer:
(b)
20. Which
of the following is made up of muscular walls?
(a) Bone
(b) Skin
(c) Heart
(d) Blood
Answer:
(c)
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