Class 8 Science Chapter 7 MCQ. We covered all the Class 8 Science Chapter 7 MCQ in this post for free so that you can practice well for the exam.
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Class 8 Science Chapter 7 Objective MCQ for Students
Fathometer is used to measure
(A) Earthquake
(B) Rain
(C) Depth of sea
(D) Sound intensity
Option c – Depth of sea
Which one of the following is not correctly matched?
(A) Manometer: Pressure
(B) Carburetor: Internal combustion engine
(C) Cardiograph: Heart movement
(D) Seismometer: Curvature of surface
Option d – Seismometer: Curvature of surface
A phonometer is used to measure which one of the following?
(A) The power of brightness of light
(B) Extremely high temperature
(C) Frequency of electromagnetic wave
(D) Testing the force of the human voice in speaking
Option d – Testing the force of the human voice in speaking
The apparatus used for detecting lies is known as
(A) Polygraph
(B) Pyrometer
(C) Gyroscope
(D) Kymograph
Option a – Polygraph
Which one of the following devices is used to measure the intensity of Earthquake?
(A) Seismograph
(B) Stethoscope
(C) Cosmograph
(D) Periscope
Option a – Seismograph
What does a ‘seismograph’ record?
(A) Heart-beats
(B) Atmospheric pressure
(C) Earthquake
(D) None of the above
Option c – Earthquake
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