Advertisements
Advertisements
प्रश्न
Name a metal which can be easily cut with a knife.
Advertisements
उत्तर
Sodium can be easily cut with a knife.
APPEARS IN
संबंधित प्रश्न
Describe in your own words, what happens to the particles when salt dissolves in water.
Explain why steel is used to make railway lines.
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?
Give reason why graphite is used for making elecrode in a dry cell.
How would you confirm that a colourless liquid given to your is pure water ?
Which one of the following is not a metalloid ?
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Which of the two will scatter light : soap solution or sugar solution ? Why ?
How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C ?
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
Explain how, impure copper sulphate can be purified by crystallisation.
One of the following does not undergo sublimation. This one is :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?
All the matter made of ______.
A standard sheet of paper is about ______ of atoms thick
Atoms are tiny particles that repel each other when they are squeezed very close.
The phenomenon of Evaporation takes place at the ______ of a liquid.
Define the term matter.
Define the term matter.
