Download App

Matter in Our Surroundings — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
MCQ
Crystals of KMnO4 in water proves that:
  • A
    KMnO4 is of red colour.
  • B
    KMnO4 is acidic in nature.
  • C
    KMnO4 is made up of millions of tiny particles.
  • D
    KMnO4 is a reducing agent.
✓

Answer

  1. KMnO4 is made up of millions of tiny particles.

Explanation:

Each potassium permanganate crystal is made up of millions of small particles which keep on spreading and imparting colour to the water in which it is dissolved.

The changing of a solid directly into vapours on heating is called sublimation.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q-[Che-1M]" from Matter in Our Surroundings→Matter in Our Surroundings — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

During summer season, water kept in an earthen pot becomes cool because of the phenomenon of:
→
The nuclear model of the atom was suggested by:
→
Which of the following is not correctly matched ?
→
Which of the following is not a postulate of Dalton's atomic theory
→
Which one of the following is not a metalloid?
  1. Boron.
  2. Silicon.
  3. Gallium.
  4. Germanium.
→
Why does perspiration leave a cooling effect on our body:
→
Crude petroleum has many components that are useful. Which of the following methods is employed to separate the components?
→
One of the following does not show Tyndall effect. This one is:
  1. Soap solution.
  2. Ink.
  3. Sugar solution.
  4. Starch solution.
→
For each of the following, use letters to indicate wheather the matter is element (E), compound (C) or mixture (M).
S.No.
Matter
Classification
1.
Water
2.
Mercury
3.
Air
4.
Tin
→
The elements which normally exist in the liquid state are:
→