set 5 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on mechanics (mass, force, acceleration, work, energy, momentum, velocity) topic of general science mcq
(a) Sum of Potential Energy and Kinetic Energy at any point during the free fall remains constant
(b) Potential energy gets converted into kinetic energy progressively
(c) The law of conservation of energy is violated
(d) Both (a) and (b)
The correct answers to the above question in:
Answer: (d)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 5) Online Quiz
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Read more mechanics work and energy Based General Science Questions and Answers
Question : 1
An electrical appliance of 500 W is used for 5 hours per day. Energy consumed in 30 days will be
a) 75 kW h
b) 25 kW h
c) 2.5 kW h
d) None of these
Answer »Answer: (a)
Question : 2
A car is moving on a road and rain is falling vertically. Select the correct answer.
a) The rain will strike both the screens
b) The rain will strike the front screen only
c) The rain will strike the wind screen only
d) The rain will not strike any of the screens
Answer »Answer: (b)
Question : 3
The working principle of a washing machine is :
a) reverse osmosis
b) dialysis
c) centrifugation
d) diffusion
Answer »Answer: (c)
Question : 4
A book is kept on the surface of a table. If the gravitational pull of the earth on the book is the force of action, then the force of reaction is exerted by
a) the table on the book
b) the book on the earth
c) the book on the table
d) the table on the earth
Answer »Answer: (a)
Question : 5
In wind power, which form of energy is converted into electrical energy?
a) Solar energy
b) Potential energy
c) Kinetic energy
d) Radiant energy
Answer »Answer: (c)
Question : 6
Consider the following statements :
- Copernicus discovered that the earth moves around the sun.
- An astronaut cannot use a straw to sip a drink on the surface of the moon.
- The S.I. unit of weight is kilogram.
a) 2 and 3
b) 1 and 2
c) 1 and 3
d) 1, 2 and 3
Answer »Answer: (b)
The weight of an object is the force on the object due to gravity.
The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton.
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