Science Quiz / MCQs

Q 21. Which is the correct unit for measuring astronomical distances?
a) Angstron unit b) Mole c) Kilometre d) Light year
Q 22. Which is the correct unit for measuring nuclear radii?
a) Micron b) Milimeter c) Fermi d) Angstron unit
Q 23. If the distance travelled by a particle is zero, then what will be its displacement?
a) Zero b) May or may not be zero c) Negative d) Not zero
Q 24. What does speedometer records?
a) Average acceleration b) Average velocity c) Instantaneous speed d) Average speed
Q 25. Out of the following which is not a scalar quantity?
a) Time b) Volume c) Density d) Momentum
Q 26. What is the minimum number of unequal forces whose resultant will be zero?
a) 4 b) 3 c) 2 d) 1
Q 27. A stone is thrown horizontally from the top of a tower, What is the nature of path followed by the stone?
a) Straight b) Parabolic c) Circular d) Hyperbolic
Q 28. A stone is thrown horizontally and another is dropped simultaneously from the top of a tower, Which will reach the ground first?
a) Both the stones reach simultaneously b) A stone thrown horizontally c) Depends upon the masses of the stones d) A stone dropped
Q 29. A heavy and light body are dropped from the top of a tower, which will reach the ground first?
a) Both will reach at same time b) Heavy c) Light d) Not known
Q 30. Which of these animals lends its name to a traditional unit of power?
a) Cow b) Bullock c) Horse d) Camel