Class 8 General Science Notes: - Unit-8- Force and Pressure ( Solved Exercise MCQs)

Unit-7- Force and Pressure ( Solved Exercise MCQs)

(National Book Foundation - New Book/New Syllabus Based on National Curriculum Pakistan 2023-2024 and Onwards)

(Class 8 General Science Notes for 8th Centralized Exam 2023-2024 and onward, FDE, Islamabad)

A. MCQs (Choose the Correct Answers).

1. A football is at rest on the ground the forces acting on it are

a. zero.
b. balanced.
c. unbalanced.
d. uncountable.

... Answer is b. balanced.
--------------

2. An object is moving in a circle, the forces acting on it are

a. zero.
b. balanced.
c. unbalanced.
d. uncountable.

... Answer is b. balanced.
-----------------

3. The unit of buoyant force is

a. pascal.
b. newton.
c. buoyancy.
d. pressure.

... Answer is b.  newton.
-----------------

4. Which of the following quantities is measured in units of Pascal?

a. Friction
b. Buoyancy
c. Pressure
d. Force

... Answer is c.  Pressure
---------------

5. Force applied per unit area gives

a. buoyancy.
b. pressure.
c. friction.
d. net force.

... Answer is b.  pressure.
-----------------

6. With depth, pressure in a liquid

a. decreases.
b. increases.
c. stay the same.
d. is zero.

... Answer is b.  increases.
------------------

7. The atmospheric pressure will be lowest

a. in Islamabad.
b. in Lahore.
c. in Karachi.
d. on top of K2.

... Answer is d.  on top of K2.
--------------------

8. A toy floats in a bathtub. The buoyant force exerted on the toy depends on the volume of

a. water in the bathtub.
b. the bathtub.
c. the water displaced.
d. the toy under water.

... Answer is c.  the water displaced.
---------------

9. If a submerged object displaces an amount of liquid with a weight less than its own the object is released, it will

a. sink.
b. remain submerged in equilibrium.
c. float.
d. pop up out of the surface.

... Answer is a.  sink.
---------------

10. If the same-sized force is made to act over a smaller area

a. the pressure is decreased.
b. the pressure is not changed.
c. the pressure is increased.
d. the result depends on the shape of the

... Answer is b.  the pressure is increased.
As P = F/A, the area is inversely proportional to the pressure so it will increase

************************************

Shortcut Links For:

1.  5th Class All Subjects Notes

2.  8th Class All Subjects Notes

1. Website for School and College Level Physics   

(https://askrarequiz.blogspot.com)

2. Website for School and College Level Mathematics  

(https://askraremaths.blogspot.com)

3. Website for Single National Curriculum Pakistan - All Subjects Notes 

(https://askrareclassnotes.blogspot.com/)

© 2023 & onwards Academic Skills and Knowledge (ASK)   

Note:  Write me in the comments box below for any query and also Share this information with your class-fellows and friends.