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प्रश्न
Give two examples of the following.
Non-metals which are lustrous
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उत्तर
Radium, Graphite
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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 |
What is meant by 2H and H2
Indicate whether the following statement is true or false:
Noble gases are high reactive
Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Select the correct answer from A, B, C, D & E for the statement given below :
A noble gas.
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.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Why are utensils made up of aluminium and brass?
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
