Advertisements
Advertisements
प्रश्न
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
Advertisements
उत्तर
The chalk reduces in size after writing on the blackboard. It becomes flat on the side from which we use it for writing.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
Fill in the blank
All matter is made up of tiny particles called ______
Define matter. Give four examples of matter.
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
What is the difference between solutions and colloids ?
How will you differentiate between a suspension and a colloid ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the metals that are used in jewellery.
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
