321271 A and \({\mathrm{B}}\) formed in the following reactions are
\({\mathrm{\mathrm{CrO}_{2} \mathrm{Cl}_{2}+4 \mathrm{NaOH} \rightarrow \mathrm{A}+2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O}}}\)
\({\mathrm{\mathrm{A}+2 \mathrm{HCl}+2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow \mathrm{B}+3 \mathrm{H}_{2} \mathrm{O}}}\)

321272 Acidified potassium dichromate oxidises
I. Iodides to iodine
II. Sulphides to sulphur
III. Tin (IV) to tin (II)
IV. Iron (III) salts to iron (II) salts
The appropriate option with correct choices are

321273 Which one of the following statements is correct when \(\mathrm{\mathrm{SO}_{2}}\) is passed through acidified \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) solution?

321274 The number of moles of \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) that will be needed to react one mole of \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\) in acidic medium is

321271 A and \({\mathrm{B}}\) formed in the following reactions are
\({\mathrm{\mathrm{CrO}_{2} \mathrm{Cl}_{2}+4 \mathrm{NaOH} \rightarrow \mathrm{A}+2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O}}}\)
\({\mathrm{\mathrm{A}+2 \mathrm{HCl}+2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow \mathrm{B}+3 \mathrm{H}_{2} \mathrm{O}}}\)

321272 Acidified potassium dichromate oxidises
I. Iodides to iodine
II. Sulphides to sulphur
III. Tin (IV) to tin (II)
IV. Iron (III) salts to iron (II) salts
The appropriate option with correct choices are

321273 Which one of the following statements is correct when \(\mathrm{\mathrm{SO}_{2}}\) is passed through acidified \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) solution?

321274 The number of moles of \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) that will be needed to react one mole of \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\) in acidic medium is

321271 A and \({\mathrm{B}}\) formed in the following reactions are
\({\mathrm{\mathrm{CrO}_{2} \mathrm{Cl}_{2}+4 \mathrm{NaOH} \rightarrow \mathrm{A}+2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O}}}\)
\({\mathrm{\mathrm{A}+2 \mathrm{HCl}+2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow \mathrm{B}+3 \mathrm{H}_{2} \mathrm{O}}}\)

321272 Acidified potassium dichromate oxidises
I. Iodides to iodine
II. Sulphides to sulphur
III. Tin (IV) to tin (II)
IV. Iron (III) salts to iron (II) salts
The appropriate option with correct choices are

321273 Which one of the following statements is correct when \(\mathrm{\mathrm{SO}_{2}}\) is passed through acidified \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) solution?

321274 The number of moles of \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) that will be needed to react one mole of \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\) in acidic medium is

321271 A and \({\mathrm{B}}\) formed in the following reactions are
\({\mathrm{\mathrm{CrO}_{2} \mathrm{Cl}_{2}+4 \mathrm{NaOH} \rightarrow \mathrm{A}+2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O}}}\)
\({\mathrm{\mathrm{A}+2 \mathrm{HCl}+2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow \mathrm{B}+3 \mathrm{H}_{2} \mathrm{O}}}\)

321272 Acidified potassium dichromate oxidises
I. Iodides to iodine
II. Sulphides to sulphur
III. Tin (IV) to tin (II)
IV. Iron (III) salts to iron (II) salts
The appropriate option with correct choices are

321273 Which one of the following statements is correct when \(\mathrm{\mathrm{SO}_{2}}\) is passed through acidified \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) solution?

321274 The number of moles of \(\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}\) that will be needed to react one mole of \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\) in acidic medium is