Chemistry
Grade-8
Easy
Question
Identify the incorrect statement/s from the following:
(i) Crystallization is better than evaporation because some substance might get decomposed on heating.
(ii) Sometimes, sublimation can be used to separate the salt from sea water.
(iii) A mixture of iron fillings and aluminium powder can be separated by a magnet.
- Only (i) and (ii)
- Only (ii)
- Only (iii)
- Only (ii) and (iii)
Hint:
Sublimation cannot be used for separation of salt from seawater.
The correct answer is: Only (ii)
sublimation can also not be used for separation of Salt from seawater because sublimation is the process of conversion of a solid substance directly into gaseous state. This technique is not appropriate in this condition
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