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Some Natural Phenomena Science - Some Natural Phenomena

Jharkhand Board (JAC) - STD 8 - Science (Jharkhand - English Medium). 98 questions in this chapter.

Question types

Some Natural Phenomena question types

98 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

98
Questions
7
Question groups
5
Question types
Sample Questions

Some Natural Phenomena questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2M.C.Q. [I MARKS]1 Mark
When an object gets negatively charged by the process of friction, then:
  • A
    The object loses some electrons.
  • B
    The object loses some protons.
  • ✓
    The object gains some electrons.
  • D
    The object gains some protons.

Answer: C.

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Q 3M.C.Q. [I MARKS]1 Mark
When a plastic comb is rubbed with dry hair, the hair get positively charged by friction. In this porcess:
  • A
    The hair loses some positive protons.
  • ✓
    The hair gain some positive protons.
  • C
    The hair loses some negative electrons.
  • D
    The hair gain some negative electrons.

Answer: B.

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Q 5M.C.Q. [I MARKS]1 Mark
The device used for detecting charge (positive or negative) on an object is called:
  • A
    Stethoscope.
  • B
    Telescope
  • C
    Kaleidoscope.
  • ✓
    Electroscope.

Answer: D.

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Q 20true or false. [1 M]1 Mark
State whether the following statements are true or false: An earthquake of magnitude $2$ on Richter Scale is ten times as strong as an earthquake of magnitude $1$ on the same Scale.
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Q 29questions in details [4 marks ]4 Marks
A glass rod is rubbed with a silk cloth and an inflated rubber balloon is rubbed with a woollen cloth. Now, out of glass rod, silk cloth, rubber balloon and woollen cloth:
$i.$ which two objects acquire negative charge?
$ii.$ which two objects acquire positive charge?
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