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Clouds get electrically charged when...

Clouds get electrically charged when

A

the ultraviolet rays of sun falls on them.

B

air molecules rub against water molecules

C

cold currents of air rub against hot currents of air.

D

Both (b) and (d)

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The correct Answer is:
D
Both (b) and (d)
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PEARSON IIT JEE FOUNDATION-ELECTRICITY-CONCEPT APPLICATION (Level 1) (Select the correct alternative)
  1. Volt is the unit of

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  2. The process of electrolysis is used in .

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  3. Clouds get electrically charged when

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  4. During electrification by friction

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  5. The electrical energy consumed by a 30 W bulb in 5 minutes is .

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  6. The S.I. unit of electric charge is

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  7. The S.I. unit of surface charge density is .

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  8. If 2 A of current flows through a conductor, the charge that flows i...

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  9. When no charge is supplied to or removed from a neutral body, then the...

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  10. Two wires of same material and length have the radii of their cross ...

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  11. Which among the following has carbon as the positive electrode?

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  12. The charge supplied to a good conductor always resides

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  13. The process suitable for charging a glass rod is

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  14. The bluish white streak of light seen during lightning is due to

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  15. During lightning, thunder is produced due to

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  16. In which of the following cells, carbon is not used as positive electr...

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  17. Which is false about electrolysis ?

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  18. In a circuit, a battery can be represented by

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  19. An electric current of 6 A flows through a circuit for 10 minutes. W...

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  20. Two bulbs each of 60 W and 80 W power are used for (1/4)th a day and ...

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