1.

Which of the following reaction shows the oxidising nature of H_2SO_4 ?

Answer»

`CA(OH)_2 + H_2SO_4 to CaSO_4 + 2H_2O`
`NACL + H_2SO_4 to NaHSO_4 + HCl`
`2PCl_5 + H_2SO_4 to 2POCl_3 +2HCl +SO_2 Cl_2`
`2HI+ H_2SO_4 to I_2 + SO_2+ 2H_2O`

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