Advertisements
Advertisements
Question
Which of the two will scatter light : soap solution or sugar solution ? Why ?
Solution
Soap solution is a colloidal solution. Therefore, it scatters light due to large particles and creates Tyndall effect.
APPEARS IN
RELATED QUESTIONS
Solids have definite shape and definite volume.
Liquids have definite shape and definite volume.
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
State two physical properties on the basis of which metals can be distinguished from non-metals.
Which of the following are compounds ?
- CO
- No
- NO
- Co
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.
- What could the group of materials P be ?
- Name the substances Q. Give two examples of such substances.
- Name the substances R. Write two examples of such substances.
- Name the substances S. Give two examples of such substances.
- Out of Q, R and S, which substances are malleable and ductile ?
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
Name the different types of solutions. Give one example of each.
Which of the following is not an emulsion ?
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How will you separate a mixture of common salt, sulphur powder and sand ?
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).
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
Explain the meaning of the term ‘matter’.
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
Solids do not flow.
Give an example of liquid in gas.
