PPSC Past Paper Care Taker BS-14 (L&HR) 2019 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsIn radiation, which of the following has strong photons?A. Alpha Rays B. Gamma Rays C. Beta Rays D. X-Rays Permanent hardness of water may be removed by the addition of?Medium sized kidney stones are removed by?
