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Q 1. Which of the following cannot be charged easily by friction?
Plastic scale
Woolen cloth
Copper rod
Inflated balloon
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Q 2. Charge can be produced on a body by
Induction
Heating
Pressuring
Cooling
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Q 3. A body is negatively charged means
Excess of electron
Deficiencyof electron
Extra mass on body
Excess of neutrons
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Q 4. During thunderstorms lightning which will be seen/heard first-
Light
Sound
Both same time
None
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Q 5. The process of transfer of charges from a charged object to the earth is called
earthing
lightning
oscillation motion
electron movement
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Q 6. The power of an earthquake is expressed on a scale called
seismic scale
iron scale
richter scale
large scale
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Q 7. Which instrument is used to measure earthquake?
Richter scale
Seismograph
Polygraph
None of these
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Q 8. Which is not a natural phenomena?
Earthquakes
Cyclones
Lightning
Earthing
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Q 9. Where is the lightning rod attached to protect the building from lightning?
On the top of the building
On the bottom of the building
In the middle of the building
All of these
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Q 10. Lightning always follows
a thunder
rain pour
the easiest path
a straight path
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Q 11. Tsunami means
earthquake
floods
earthquake under the sea
eruption of volcano in a sea
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Q 12. Which of the following can be charged with static electricity?
Metal
Alloy
Insulator
Semiconductor
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Q 13. Lightning occurs because of
rain
electric discharge
wind
angry Gods
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Q 14. The air in the path of lightning goes up to a temperature of about
300°C
3000°C
300,000°C
30,000°C
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Q 15. If you are caught in a thunderstorm you should
go and stand on a high ground
stand under a tree
take shelter indoors
All of the above
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Q 16. Charged objects exert a ............. on each other
cloud
lightning
force
power
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Q 17. We hear a thunder because
a lot of charge goes in lightning
because lightning is very bright
because the air heats up and expands all of a sudden
Clouds bang against each other
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Q 18. The process of discharging atmospheric electricity into the earth by a lightning conductor is called :
electrical neutralization
short-circuiting
earthing
both (A) and (B)
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Q 19. The point directly above the origin point of the earthquake under the surface of the earth is called :
seismic focus
seismic front
epicentre
Both (A) and (B)
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Q 20. Static electricity or electrostatics is the electricity in which
Charges are in motion
Charges are at rest
Both (a) and (b)
None of these
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Q 21. Similar charges :
Repel each other
Attract each other
Neither attract nor repel
None
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Q 22. Repulsion is:
The surest test for electrification
The only property of charge
Neither (a) nor (b)
All of these
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Q 23. Three subatomic particles are
Neutrons, protons and electrons
Nucleus, protons and gamma-rays
Neutrons, X-rays and gamma-rays
All of these
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Q 24. When two clouds having huge amount of positive and negative charges approach each other, then :
The air becomes a good conductor of electricity
The air becomes a bad conductor of electricity
Huge discharge passes across them, called lightning
None of these
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Q 25. Generally lower part of clouds has :
positive charge
negative charge
zero charge
any type of charge