Science MCQ Questions in Hindi. We covered all the Science MCQ Questions in Hindi in this post for free so that you can practice well for the exam.
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Mock Test on Science for Students
The separation of cream from milk by churning is due to
(a) gravitational force
(b) cohesive force
(c) centrifugal force
(d) None of these
Option c - centrifugal force
Consider the following statements. I. Centrifugal force is exerted by a cream separator machine of the milk. II. A horse suddenly moves then it is fear to fall down the horse rider because of the inertia of rest. III. The bodies executing free-falling motion have equal momentum. Which of the statement given above is correct?
(a) I, II, and III
(b) I and II
(c) III and II
(d) Only I
Option b - I and II
A car undergoes a uniform circular motion. The acceleration of the car is
(a) zero
(b) a non-zero constant.
(c) non-zero but not a constant.
(d) None of the above
Option b - a non-zero constant
A stone tied to a string is whirled in a circular path. As it was revolving, the rope suddenly snaps. Then
(a) the stone flies off tangentially.
(b) the stone moves ally outward.
(c) the stone moves radially inward.
(d) None of the above
Option a - the stone flies off tangentially
A brass ball is tied to a thin wire and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true? I. The ball moves with constant velocity. II. The ball moves with constant speed. III. The ball moves with constant acceleration. IV. The magnitude of the acceleration of the ball is constant. Select the correct answer using the codes given below
(a) Only I
(b) I and III
(c) I, II, and IV
(d) II and IV
Option d - II and IV
The working principle of a washing machine is
(a) centrifugation
(b) dialysis
(c) reverse osmosis
(d) diffusion
Option a - centrifugation
The ladder is an example of
(a) class-l lever
(b) class-ll lever
(c) class-Ill lever
(d) inclined plane
Option c - class-Ill lever
A ball balanced on a vertical rod is an example of
(a) stable equilibrium
(b) unstable equilibrium
(c) neutral equilibrium
(d) perfect equilibrium
Option b - unstable equilibrium
The motion of a body around a circular path is an example of
(a) uniform velocity, and variable acceleration.
(b) uniform speed, uniform velocity.
(c) uniform speed, variable velocity.
(d) uniform speed, variable acceleration.
Option c - uniform speed, variable velocity
The lever work is based on
(a) the Principle of Torque.
(b) Moment of Inertia.
(c) Newton's First Law of Motion.
(d) Newton's Third Law of Motion.
Option a - the Principle of Torque
The mechanical gain of the lever is
(a) the ratio of load to the effort.
(b) the ratio of load to the fulcrum.
(c) the multiply of load and effort.
(d) None of the above
Option a - the ratio of load to the effort
A wheel-barrow is an example of
(a) class III lever
(b) pulley system
(c) class, I lever
(d) class II lever
Option d - class II lever
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