General Science MCQ Question Answer Objective Model Paper

16) Which one of the following planets is said to be ‘’twin sister’’ of the Earth?

a) Mercury

b) Venus

c) Mars

d) Jupiter

View Answer
Option – b)

17) A perfect black body has the unique characteristic feature as

a) a good absorber only

b) a good radiator only

c) a good absorber and a good radiator

d) Neither an absorber nor radiator

View Answer
Option – c)

18) Cavitation is a special application property exhibited only by

a) audible sound

b) infrasonic

c) ultrasonic

d) electromagnetic waves

View Answer
Option – c)

19) Why laser is used in the pipe alignment?

a) They are directional in nature

b) They are coherent

c) They are monochromatic

d) None of the above

View Answer
Option – a)

20) Which one of the following common devices works on the basis of the principle of mutual induction?

a) Tubelight

b) Transformer

c) LED

d) Photodiode

View Answer
Option – b)


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