Friday, May 24, 2013

CBSE Class 8 - Science - CH11 - Force and Pressure (MCQs)

Force and Pressure 

(MCQs)

Q1: Opening a door is an example of ._______

(a) Contact force
(b) Non contact force
(c) Spring force
(d) Magnetic force




Q2: What is the cause of change in motion or change in the state of motion?

(a) Pressure
(b) Atmospheric Pressure
(c) Friction
(d) Force


Q3: A charged balloon attaches to a wall because of ______

(a) Muscular force
(b) Electrostatic force
(c) Magnetic force
(d) Gravitational force


Q4: The unit of force is _______

(a) Newton
(b) Dyne
(c) kg. weight
(d) All of these


Q5: What is force?

(a) Push
(b) Pull
(c) both a and b
(d) None of these


Q6: A body is said to be under balanced forces when the resultant force applied on that body is_____

(a) One
(b) Zero
(c) Infinite
(d) None of these


Q7: The ratio of force, acting perpendicular to the area, on which it acts is known as ________.

(a) Force
(b) Friction
(c) Presuure
(d) Density


Q8: The pressure of the water at the bottom of the pond is _______  at the surface of the pond.

(a) Lower than
(b) Higher than
(c) Same
(d) either lower or higher


Q9: As we go to the higher altitude the atmospheric pressure ________.

(a) Increases
(b) Decreases
(c) Remains same
(d) Cannot say


Q10: The force involved in falling an apple from a tree is:

(a) Magnetic force
(b) Contact force
(c) Electrostatic force
(d) Gravitational force


Answers:
1: (a) Contact force
2: (d) Force
3: (b) Electrostatic force
4: (d) All of these
5: (c) both a and b
6: (b) Zero
7: (c) Presuure
8: (b) Higher than
9: (b) Decreases
10: (d) Gravitational force






20 comments:

  1. Pressure is not spelled 'pressure'

    ReplyDelete
  2. Replies
    1. it is unit of force
      1 newton = 100000 dyne
      dyne is a unit of force specified in the centimetre–gram–second system of units (CGS), a predecessor of the modern SI.

      Delete
  3. Expecting more MCQs for this lesson

    ReplyDelete
  4. Replies
    1. This comment has been removed by the author.

      Delete
  5. i also got full the questions are so easy

    ReplyDelete
  6. the 4 answer is wrong.. it is newton. checked in google. please refer another web page also.

    ReplyDelete
    Replies
    1. In MKS systems and SI units, unit of force is Newton. In CGS system, it is dyne. Another unit used earlier to measure weights (a type of force) is kg-wt (1 kg-wt = 9.8N). Option 'd' is correct.

      Delete
  7. The SI unit of force is the newton,i checkout it on google and google is always right

    ReplyDelete
  8. Requesting 2 more mcq because have to do 12 in science notebookšŸ˜‚

    ReplyDelete