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प्रश्न
Write true or false
All pure substances have characteristic melting and boiling points.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Name the main metal present in the following :
Haemoglobin
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
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
By using a separating funnel
Fill in the blank
Use of a __________ to separate the components of a mixture of solids is based on the difference in the size of the components.
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 ?
Name the substance you will add to speed up sedimentation.
What is centrifugation ? Also write the principle on which it works.
Name the techniques used to separate a solid from its solution.
Write the differences between mixture and compounds.
