Advertisements
Advertisements
प्रश्न
A carpenter wants to separate iron nails from saw-dust. Which method of separation should he choose ?
Advertisements
उत्तर
Iron nails are attracted by magnet. Thus, they can separated from saw dust using magnetic separation.
APPEARS IN
संबंधित प्रश्न
Name the processes involved in two cases.
Name a non-metal which is a good conductor of electricity.
What is meant by saying that non-metals are brittle ?
Name one element, one compound and one mixture.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Name a metal which can be easily cut with a knife.
Which of the following are compounds ?
- CO
- No
- NO
- Co
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
What is the difference between solutions and colloids ?
Name the different types of solutions. Give one example of each.
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process which can be used to purify an impure sample of copper sulphate.
Name the process by which common salt is purified.
Describe the method of separating a mixture containing common salt, sand and ammonium chloride.
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
What type of matter glass is?
______ is used for industrial refrigeration and transporting frozen food.
