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प्रश्न
Give two examples of Non-metals.
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उत्तर
Examples of Non-metals: Carbon are sulphur, oxygen.
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संबंधित प्रश्न
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
What are the advantages of chromatography?
State the number of atoms of each element, present in \[\ce{HNO3}\].
Also name the compound.
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Write the names of elements from the following symbol:
Zn
Explain the difference between Atoms and molecules.
Give three differences between elements & compounds with relevant examples.
