alleryStart learning →Chalk residue carries salt solution. Why wash it with clean water?
ATo evaporate the salt on it
BTo make chalk pass the filter
CTo dissolve and rinse away salt
DTo distil salt from the chalk
Answer & Solution
Correct answer: C. To dissolve and rinse away salt
Water removes adhering soluble salt from the insoluble chalk so that the dried residue is cleaner.
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