1. What is true for an electron?
a. It has a unit negative charge
b. It has no charge
c. It has a positive charge
d. None of these
2. “White dwarf” is related to
a. Astronomy
b. Agriculture
c. Generics
d. None of these
3. An aeroplane rises above because
a. Of the upward reaction of air
b. The density of air above the plane is less than below it
c. The pressure above the wings is less than the pressure below it
d. Its nose points upwards
4. X-rays are actually
a. Slow moving electrons
b. Fast moving electrons
c. Electromagnetic waves
d. Slow moving neutrons
5. Why a burning candle extinguishes when covered with a vassal?
a. Because of vacuum inside the vassal
b. Because of no supply of oxygen
c. By the pressure of the vassal
d. None of these
6. By which of the following does a football bounces:
a. Rubber
b. Hollowness
c. Friction of air
d. Flexibility
7. Light year is related to :
a. Energy
b. Distance
c. Speed
d. Time
8. The colors in both the outer extremes of the rainbow are:
a. Violet and Red
b. Violet and Green
c. Green and Red
d. Red and Blue
9. Three primary colors are:
a. Blue, Green and Red
b. Yellow, Green and Red
c. Yellow, Green and Red
d. Violet, Indigo and Blue
10. A transformer is used to:
a. Increase DC voltage
b. Increase or Decrease AC voltage
c. Decrease DC voltage
d. Convert DC voltage
11. Velocity of sound is minimum in:
a. Air
b. Glass
c. Water
d. Wood
12. Which of these are associated with a nuclear explosion?
a. Mustard Flour
b. Trachor Cap
c. Mushroom Cloud
d. Muskertry
13. “Fathom” is the unit of
a. Depth
b. Sound
c. Energy
d. Flow
14. Friction Force works on the ________ direction of the moving object
a. Opposite
b. Same
c. Both
d. None of these
15. When milk is churned, the cream is separated from milk due to:
a. Gravitational Force
b. Centrifugal Force
c. Frictional force
d. None of these
16. An electric bulb produces a loud sound when it is broken because
a. Glass is brittle
b. The gas inside the bulb suddenly expands
c. The gas makes the explosion
d. The air rushes into partial vacuum of the bulb
17. Rain drops are spherical in shape. This is due to:
a. Velocity of water
b. Evaporation
c. Air Friction
d. Surface Tension
18. What is a Black hole
a. Vacuum in Space
b. Dying Star
c. Spot in the Sun
d. Meteorite
19. Which among the following colors have shortest wavelength:
a. Green
b. Red
c. Violet
d. Yellow
20. RADAR uses:
a. Magnetic Waves
b. Sound Waves
c. Ultra-sonic Waves
d. Radio Waves
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