मराठी

When a Crystal of Potassium Permanganate is Placed in a Beaker, Its Purple Colour Spreads Throughout the Water. What Does this Observation Tell Us About the Nature of Potassium Permanganate and Water? - Science

Advertisements
Advertisements

प्रश्न

When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?

टीपा लिहा
Advertisements

उत्तर

The particles of potassium permanganate and water mix on their own without any stirring. Two conclusions can be drawn from this phenomenon. These are:

  1. Potassium permanganate and water are made up of very tiny particles.
  2. Water particles have large spaces between them which are occupied by the tiny potassium permanganate particles.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Matter in Our Surroundings - Very Short Answers [पृष्ठ १९]

APPEARS IN

लखमीर सिंह Chemistry [English] Class 9
पाठ 1 Matter in Our Surroundings
Very Short Answers | Q 27 | पृष्ठ १९

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Intermolecular space is maximum in .......... less in ............ and the least in .........


Describe in your own words, what happens to the particles when salt dissolves in water.


Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?


Name a liquid which can be classified as a pure substance and conducts electricity.


What is meant by saying that metals are lustrous ?


Fill in the following blanks with suitable words :

An element is made up of only one kind of ........


Give reason why copper metal is used for making electric wires.


You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?


There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.

  1. What could the group of materials P be ?
  2. Name the substances Q. Give two examples of such substances.
  3. Name the substances R. Write two examples of such substances.
  4. Name the substances S. Give two examples of such substances.
  5. Out of Q, R and S, which substances are malleable and ductile ?

Explain what happens when a beam of light is passed through a colloidal solution.


Define Foam Give one example.


What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?


Name the property of one of the constituents which can be used to separate a mixture of salt and iodine


Name the process by which all the dye can be recovered from black ink.


How will you separate a mixture of iron filings and powdered carbon ?


Explain how, impure copper sulphate can be purified by crystallisation.


How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).


There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :

(a) Which process will you use to separate a mixture of A and B ?

(b) Which method will you use to separate a mixture of B and C ?

(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.


Which of the following are homogeneous in nature?

(i) ice

(ii) wood

(iii) soil

(iv) air


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×