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General Science MCQ on Biology, Chemistry and Physics with Answer
Q: Decibel is the unit used for
A: intensity of light
B: intensity heat
C: intensity of sound
D: frequency of radio wave
Answer
Correct Option: C  [ intensity of sound ]
Remark:
Q: Which of the following micro-organism causes diseases like
polio and chicken pox
?
A: Bacteria
B: Protozoa
C: Algae
D: Virus
Answer
Correct Option: D  [ Virus ]
Remark:
Q: Which of the following is
not
a property of acids ?
A: All acids have sour taste
B: All acids are corrosive in nature
C: For acidic solutions pH = <7
D: Acids turn red litmus to blue
Answer
Correct Option: D  [ Acids turn red litmus to blue ]
Remark:
Q: Which of the following retains the information when the power to the system is shut down?
A: CPU
B: ROM
C: RAM
D: DIMM
Answer
Correct Option: B  [ ROM ]
Remark:
Q: If a liquid is heated in space under no gravity, the transfer of heat will take place by process of:
A: conduction
B: convection
C: radiation
D: cannot be heated in the absence of gravity
Answer
Correct Option: C  [ radiation ]
Remark:
Q: RADAR is used for
A: locating submerged submarines
B: receiving signals in a radio receiver
C: locating geostationary satellites
D: detecting and locating the position of objects such as aeroplane
Answer
Correct Option: D  [ detecting and locating the position of objects such as aeroplane ]
Remark:
Q: Atom bomb is based on:
A: Chemical reaction
B: Nuclear fission
C: Nuclear fusion
D: Atomic collision
Answer
Correct Option: B  [ Nuclear fission ]
Remark:
Q: Helium is preferred to hydrogen in air balloons because it:
A: is cheaper
B: is less dense
C: has greater lifting power
D: does not form an explosive mixture with air
Answer
Correct Option: D  [ does not form an explosive mixture with air ]
Remark:
Q: Organic farming does not include:
A: green manures
B: chemical fertilizers
C: crop rotation
D: compost and farmyard manures
Answer
Correct Option: B  [ chemical fertilizers ]
Remark:
Q: Which is the respiratory organ of fish?
A: Ears
B: Gills
C: Skin
D: Lungs
Answer
Correct Option: B  [ Gills ]
Remark:
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