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प्रश्न
Give two examples of the following.
Inert gases
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उत्तर
Helium, Neon
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संबंधित प्रश्न
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 |
Define: Compounds
Give two examples of Non-metals.
Name: Two substances used to make jewellery.
Find the atomicity of the Following molecule:
Carbon Monoxide
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Select the correct answer from the choice given below.
The element which is malleable
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
