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Indian Salt Petre

Questions from TNPSC Group 1 Exam:
General Science :

 Q. Indian Salt Petre is
A. Ammonium Nitrate(NH4NO3)    B. Sodium Nitrate(Na NO3)
C. Potassium Nitrate(KNO3)          D. Calcuim Nitrate(Ca NO3)

 Answer: Potassium Nitrate(KNO3)
                Potassium Nitrate(KNO3) is one of the several Nitrogen containing Compounds collectively referred as Salt petre.

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