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प्रश्न
What do you understand by :
Metalloids
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उत्तर
Metalloids : Metalloids are those substances which have some properties of metals and some of non-metals e.g. boron, silicon.
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संबंधित प्रश्न
Name the main metal present in the following:
Chalk
Name the main metal present in the following:
Chlorophyll
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Sedimentation and decantation
Fill in the blank
A pure substance has definite _______ and constant _________.
Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
Match the columns.
| Column A | Column B |
| 1. To separate grain from chaff | a. filtration |
| 2. To seperat sawdust from water | b. sedimentation and decantation |
| 3. To separate iodine from sodium chloried | c. winnowing |
| 4. To separate iron fillings from sand | d. sublimation |
| 5.It is used to separate sand and water | e.magnetic separation |
| f. handpiicking |
How can you separate iron metal from non-magnetic impurities ?
Loading is basically speeding up _____.
Differentiate between the terms elements, compounds, and mixtures with suitable examples.
When two or more elements combine together they form ______.
