Advertisements
Advertisements
प्रश्न
Give some examples of the Tyndall effect observed in your surroundings?
Advertisements
उत्तर
Examples of the Tyndall effect:
- When light rays enter into a dark room through a hole or a small window.
- Sunlight passes through a group of trees in the forest.
- Path of light rays seen in front of the projector in a cinema hall.
APPEARS IN
संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
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?
What are the characteristics of matter?
State two physical properties on the basis of which metals can be distinguished from non-metals.
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Explain what happens when a beam of light is passed through a colloidal solution.
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
How will you separate a mixture of iron filings, chalk powder and common salt ?
Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.
The material which is added to water during purification process at the water works so as to disinfect it is :
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
Name one pair of liquids which can be separated by using a separating funnel.
Wipe the board with a duster and then tap the duster against the table. What do you see?
Intermolecular space is maximum in ______.
Higher the temperature, the higher the kinetic energy of particles.
Define the term matter.
Define the term matter.
