Advertisements
Advertisements
Question
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
Advertisements
Solution
Starch solution and milk will show Tyndall effect.
This is because in a milk solution and starch solution (colloidal solutions) the size of solute particles is big enough to scatter the light passing through it.
APPEARS IN
RELATED QUESTIONS
The smallest unit of matter that exists freely in nature is called ...........
Differentiate between an atom and a molecule.
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Name two processes which provide the best evidence for the motion of particles in matter.
What is the scientific name of particles which make up mater?
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
What is meant by saying that non-metals are brittle ?
State any two properties for believing that aluminium is a metal.
Define solubility of a substance. How does it vary with temperature ?
Milk of Magnesia is :
Which one of the following is not a chemical change ?
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
Explain how, impure copper sulphate can be purified by crystallisation.
What is chromatography ? State its two applications.
The material which is added to water during purification process at the water works so as to disinfect it is :
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Atoms are tiny particles that repel each other when they are squeezed very close.
A teabag placed in a cup of hot water will diffuse into the water.
Define the term matter.
