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प्रश्न
Indicate whether the following statement is true or false:
Noble gases are high reactive
पर्याय
True
False
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उत्तर
False
Correct Statement: Noble gases are non-reactive
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संबंधित प्रश्न
Write true or false
All pure substances have characteristic melting and boiling points.
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 |
Name: a non-metal which is lustrous
Give two examples of the following.
Non-metals which are solids
What is meant by 2H and H2
Classify substances into pure and impure substances in the form of a chart or tabulation.
Give the name of the radical - CO3
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
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.
Give two example of elements.
