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Matter in Our Surroundings — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
MCQ
Which of the following statement is incorrect?
  • A
    The particles of matter are very, very small.
  • B
    The particles of matter attract one another.
  • C
    The particles of some of the matter are moving constantly.
  • D
    The particles of all the matter have spaces between them.
✓

Answer

  1. The particles of some of the matter are moving constantly.

Explanation:

The statement that the particles of some forms of matter move constantly is incorrect because the particles of matter of all three states–solid, liquid and gas are moving constantly. Although the particles of solids are fixed at their positions, they vibrate constantly.

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