Question

$(X)+K_2 {CO}_3+\mathrm{Air} \stackrel{\mathrm{heat}}{\longrightarrow}(Y)$ $(Y)+Cl_2 \rightarrow(Z)$ Pink Which of the following is correct

Accepted Answer

${X}=$ black, ${MnO}_2, {Y}=$ green, ${K}_2 {MnO}_4, {Z}={KMnO}_4$

Answer

${X}=$ black, ${MnO}_2, {Y}=\mathrm{Blue}, {K}_2 {CrO}_4, {Z}={KMnO}_4$

Answer

${X}=$ green, ${Cr}_2 {O}_3, {Y}=$ yellow, ${K}_2 {CrO}_4, {Z}={K}_2 {Cr}_2 {O}_7$

Answer

${X}=$ black, ${Bi}_2 {O}_3, {Y}=$ colourless ${KBiO}_2, {Z}={KBiO}_3$

JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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