General Science MCQ – 34 (Physics)

chemistry, physics, biology

Dear Aspirants,

General Science MCQs including Physics, Chemistry, Biology. This help is General Eligibility Test like Entrance Exam, Sainik School, NDA, Army, All India Competitive exam, and All HP Exams. You can also play our weekly quiz and download all quizzes PDF as well.

1. An oil drop spreads over water because?
(A) Oil is lighter than water
(B) Oil is more viscous
(C) Oil does not mix with water
(D) Surface tension of oil is much smaller than that of water

2. What is the name of the device which converts AC to DC?
(A) Oscillator
(B) Amplifier
(C) Rectifier
(D) None of these

3. A knot is a measure of?
(A) The speed of a ship
(B) The curvature of the spherical object
(C) Solar radiation
(D) Intensity of earthquake shock

4. When the main switch of the house is put off it disconnects the?
(A) Live wire only
(B) Live wire and the earth wire
(C) Live wire and the neutral wire
(D) Earth wire and the neutral wire

5. The heat from the sun reaches the earth by the process of?
(A) Conduction
(B) Convection
(C) Radiation
(D) All of the above

6. Which of the following produces more severe bums?
(A) Boiling water
(B) Hot water
(C) Steam
(D) Melting iceberg

7. The sudden fall of atmospheric pressure indicates?
(A) Fairweather
(B) Strom
(C) Rain
(D) Cold water

8. Magnetism in materials is due to?
(A) Electrons at rest
(B) The circular motion of electrons
(C) Protons at rest
(D) All neutrons at rest

9. Short sight in the human eye can be corrected by using proper?
(A) Convex lens
(B) Concave lens
(C) Cylindrical lens
(D) Bifocal lens

10. What is the reason for twinkling of stars?
(A) Dispersion of light
(B) Total internal reflection
(C) Atmospheric reflection
(D) Atmospheric refraction

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