1.

In what solution is the stone sample placed in an Acid test?(a) HCl of strength .5%(b) H2SO4 of strength .5%(c) H2SO4 of strength 1%(d) HCl of strength 1%

Answer» The correct answer is (d) HCl of strength 1%

For explanation: As per the test procedure, the sample weighing about .5 – 1 N is placed in a solution of HCl for 7 days.


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