1.

S8 plus concentrated H2 S o4 gives SO2 SO2 + H2O gives H2 S o4 S8 plus concentrated HNO3 gives H2 S o4 + no-2b plus concentrated H2 S o4 gives B2 O3 b23 + H2O gives s3b O3 plus NO2 Si plus concentrated H2 S o4 gives sio2 SO2 + H2O gives no reaction Si plus concentrated HNO3 gives k4 sio4 Plus and O2 precipitate iron final powdered + HCL dilute gives P + Q compound P does not precipitate with​

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