English

Give some examples of Tyndall effect observed in your surroundings?

Advertisements
Advertisements

Question

Give some examples of the Tyndall effect observed in your surroundings?

Answer in Brief
Advertisements

Solution

Examples of the Tyndall effect:

  1. When light rays enter into a dark room through a hole or a small window.
  2. Sunlight passes through a group of trees in the forest.
  3. Path of light rays seen in front of the projector in a cinema hall.
shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Is Matter Around Us Pure - Short Answer Questions [Page 16]

APPEARS IN

NCERT Exemplar Science Exemplar [English] Class 9
Chapter 2 Is Matter Around Us Pure
Short Answer Questions | Q 27. | Page 16

RELATED QUESTIONS

 Match the following

Column A Column B
(a) Molecules (i) Water boils
(b) 100° C (ii) Evaporation
(c) 0° C (iii) Changes from solid to gas
(d) At all temperatures (iv) Matter
(e) Camphor (v) Water freezes

The inter-molecular space is maximum in


Solids have definite shape and definite volume. 


Which of the following materials fall in the category of a “pure substance”?

  1. Ice
  2. Milk
  3. Iron
  4. Hydrochloric Acid
  5. Calcium oxide
  6. Mercury
  7. Brick
  8. Wood
  9. Air

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


Name the property which enables metals to be drawn into wires.


Define a compound. Give two points of evidence to show that sodium chloride is a compound.


Name a metal which forms amalgams.


Which of the following are not compounds ?

Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond


One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :


Which of the two will scatter light : soap solution or sugar solution ? Why ?


Fill in the following blank :

A colloid is a ..............mixture and its components can be separated by the technique known as ...............


Define Aerosol Give one example.


What will happen if a saturated solution is :

  1. heated
  2. cooled

Name the process you would use to separate a mixture of water and alcohol.


Which one of the following scrap metal cannot be separated by magnetic separation ?


Justify your answer.

Figure 1 Figure 2 Figure 3

The arrangement of particles in three different phases of matter is shown above.

  1. Which state is represented by Fig. 1?
  2. In which state will the inter-particle attraction be maximum?
  3. Which one of them cannot be contained in an open vessel?
  4. Which one can take the shape of its container?

What type of matter glass is?


Define the term matter.


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×