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Question

How will you test that 'tea dust' is not adulterated with iron powder?



Correct Answer
A

Place a bar magnet near the mixture 

Your Answer
B

Heat the mixture 

Your Answer
C

Mix it in water

Your Answer
D

Put the mixture under fan 


Solution

The correct option is A

Place a bar magnet near the mixture 


We can do a simple experiment to detect the presence of iron powder:
(i) Take tea dust on a paper.
(ii) Place a bar magnet over this dust.
(iii) If some particles are attracted strongly towards this magnet by clinging to it, then definitely tea dust will have iron powder.

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