set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 2 EXERCISES
The following question based on force of gravity, solids and fluids topic of general science mcq
(a) experience forces of same magnitude
(b) have different accelerations
(c) have same velocities at any instant
(d) undergo a change in their inertia
The correct answers to the above question in:
Answer: (c)
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Question : 1
Assertion (A) :
With the increase of temperature, the viscosity of glycerine increases.
Reason (R) :
Rise of temperature increases kinetic energy of molecules.
a) A is true but R is false
b) Both A and R are true but R is not a correct explanation of A
c) Both A and R are true and R is the correct explanation of A
d) A is false but R is true
Answer »Answer: (d)
Question : 2
Why do two ice blocks join to form one block when pressed together?
a) Melting point of ice remains unchanged with increase in pressure
b) Melting point of ice increases with increase in pressure
c) Melting point of ice is lowered with increase in pressure
d) Melting point of ice is 0°C
Answer »Answer: (c)
Question : 3
If the moon is to escape from the gravitational field of the earth forever, it will require a velocity
a) slightly more than 111.2 km/s
b) less than
c) 11.2 km/s
d) 22.4 km/s
Answer »Answer: (c)
Question : 4
Flow velocities in an incompressible fluid can be measured with which one of the following?
a) Strain gauge
b) Venturi tube
c) Barometer
d) Manometer
Answer »Answer: (b)
Question : 5
A spring balance is graduated on sea level. A body of mass 1 kg is weighed at consecutively increasing heights from the earth’s surface, then what would be the weight indicated by the balance?
a) Weight will remain same
b) Weight will go on decreasing continuously
c) Weight will go on increasing continuously
d) Weight will first increase and then decreases
Answer »Answer: (b)
Question : 6
Which one among the following is the correct value of the gravitational force of the Earth acting on a body of mass 1 kg?
a) 89 N
b) 9. 8 N
c) 8. 9 N
d) 98 N
Answer »Answer: (b)
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