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Sorting Materials and Groups — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceSorting Materials and Groups1 Mark
MCQ
A few statements about centrifugation method are given:
$I.$
The mixture containing very small suspended particles is rotated at a high speed in a centrifuge machine.
$II.$
The denser particles stay at the top.
$III.$
The method is used to separate water from wet clothes in a washing machine.
$IV.$
The method can be used in laboratories for separating plasma and platelets.
The correct statements are:
  • A
    $I$ and $IV$ only.
  • B
    $I, II$ and $III$ only.
  • C
    $II, III$ and $IV$ only.
  • ✓
    $I, III$ and $IV$ only.
✓

Answer

Correct option: D.
$I, III$ and $IV$ only.
Denser particles stay at the bottom.

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