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प्रश्न
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
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उत्तर
An element is made up of only one kind of atoms.
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संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
What is meant by saying that metals are sonorous ?
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
What is a suspension ? Give two examples of suspensions.
One of the following liquids will leave behind a residue on heating. This one is :
Name the process by which common salt is obtained from sea-water.
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air 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.
Wipe the board with a duster and then tap the duster against the table. What do you see?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Atoms or groups of atoms having a charge are called ______.
The fluidity of solids: ______.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
Define the term matter.
