Compounds of transition elements
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CHXII08:THE D- & F-BLOCK ELEMENTS

321339 Pyrolusite is used to prepare potassium permanganate
\(\mathrm{\mathrm{MnO}_{2} \stackrel{x}{\longrightarrow} \mathrm{MnO}_{4}^{-2} \stackrel{y}{\longrightarrow} \mathrm{MnO}_{4}^{-} \cdot \mathrm{x}}\) and \(\mathrm{\mathrm{y}}\) are

1 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic reduction
2 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic oxidation
3 Fuse with conc. \(\mathrm{\mathrm{HNO}_{3} /}\)air, electrolytic reduction
4 All are correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321340 Statement A :
Permanganate at \(\mathrm{\left[\mathrm{H}^{+}\right]=1}\) should oxidise water but in practice the reaction is extremely slow.
Statement B :
The above reaction is practically feasible only when either manganese (II) ions are present or the temperature is raised.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII08:THE D- & F-BLOCK ELEMENTS

321341 Match the columns.
supporting img

1 A - P, B - Q, C - R, D - S
2 A - P,Q,R,S, B - P,T, C - R, D - Q,S
3 A - P,S, B - P,S, C - P,Q,R, D - S,
4 A - P,Q,R, B - R, C - P,S, D - P,S
CHXII08:THE D- & F-BLOCK ELEMENTS

321342 Match the columns.
supporting img

1 \({\rm{A}} - {\rm{Q,S; B}} - {\rm{P,Q,S; C}} - {\rm{R,T;D}} - {\rm{R}}\qquad {\kern 1pt} \qquad \)
2 \({\kern 1pt} {\rm{A}} - {\rm{R; B}} - {\rm{P,S; C}} - {\rm{Q,S; D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
3 \({\rm{A}} - {\rm{P,Q,S; B}} - {\rm{Q,T; C}} - {\rm{R;D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
4 \({\rm{A}} - {\rm{P,Q,R; B}} - {\rm{P; C}} - {\rm{R; D}} - {\rm{Q,S}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321343 In alkaline medium, \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)oxidises \({\mathrm{\mathrm{I}^{-}}}\)to

1 \({\mathrm{\mathrm{IO}_{3}^{-}}}\)
2 \({\mathrm{\mathrm{I}_{2}}}\)
3 \({\mathrm{\mathrm{IO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{IO}^{-}}}\)
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321339 Pyrolusite is used to prepare potassium permanganate
\(\mathrm{\mathrm{MnO}_{2} \stackrel{x}{\longrightarrow} \mathrm{MnO}_{4}^{-2} \stackrel{y}{\longrightarrow} \mathrm{MnO}_{4}^{-} \cdot \mathrm{x}}\) and \(\mathrm{\mathrm{y}}\) are

1 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic reduction
2 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic oxidation
3 Fuse with conc. \(\mathrm{\mathrm{HNO}_{3} /}\)air, electrolytic reduction
4 All are correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321340 Statement A :
Permanganate at \(\mathrm{\left[\mathrm{H}^{+}\right]=1}\) should oxidise water but in practice the reaction is extremely slow.
Statement B :
The above reaction is practically feasible only when either manganese (II) ions are present or the temperature is raised.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII08:THE D- & F-BLOCK ELEMENTS

321341 Match the columns.
supporting img

1 A - P, B - Q, C - R, D - S
2 A - P,Q,R,S, B - P,T, C - R, D - Q,S
3 A - P,S, B - P,S, C - P,Q,R, D - S,
4 A - P,Q,R, B - R, C - P,S, D - P,S
CHXII08:THE D- & F-BLOCK ELEMENTS

321342 Match the columns.
supporting img

1 \({\rm{A}} - {\rm{Q,S; B}} - {\rm{P,Q,S; C}} - {\rm{R,T;D}} - {\rm{R}}\qquad {\kern 1pt} \qquad \)
2 \({\kern 1pt} {\rm{A}} - {\rm{R; B}} - {\rm{P,S; C}} - {\rm{Q,S; D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
3 \({\rm{A}} - {\rm{P,Q,S; B}} - {\rm{Q,T; C}} - {\rm{R;D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
4 \({\rm{A}} - {\rm{P,Q,R; B}} - {\rm{P; C}} - {\rm{R; D}} - {\rm{Q,S}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321343 In alkaline medium, \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)oxidises \({\mathrm{\mathrm{I}^{-}}}\)to

1 \({\mathrm{\mathrm{IO}_{3}^{-}}}\)
2 \({\mathrm{\mathrm{I}_{2}}}\)
3 \({\mathrm{\mathrm{IO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{IO}^{-}}}\)
JEE Main - 2024
Join With Us for More Updates
CHXII08:THE D- & F-BLOCK ELEMENTS

321339 Pyrolusite is used to prepare potassium permanganate
\(\mathrm{\mathrm{MnO}_{2} \stackrel{x}{\longrightarrow} \mathrm{MnO}_{4}^{-2} \stackrel{y}{\longrightarrow} \mathrm{MnO}_{4}^{-} \cdot \mathrm{x}}\) and \(\mathrm{\mathrm{y}}\) are

1 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic reduction
2 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic oxidation
3 Fuse with conc. \(\mathrm{\mathrm{HNO}_{3} /}\)air, electrolytic reduction
4 All are correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321340 Statement A :
Permanganate at \(\mathrm{\left[\mathrm{H}^{+}\right]=1}\) should oxidise water but in practice the reaction is extremely slow.
Statement B :
The above reaction is practically feasible only when either manganese (II) ions are present or the temperature is raised.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII08:THE D- & F-BLOCK ELEMENTS

321341 Match the columns.
supporting img

1 A - P, B - Q, C - R, D - S
2 A - P,Q,R,S, B - P,T, C - R, D - Q,S
3 A - P,S, B - P,S, C - P,Q,R, D - S,
4 A - P,Q,R, B - R, C - P,S, D - P,S
CHXII08:THE D- & F-BLOCK ELEMENTS

321342 Match the columns.
supporting img

1 \({\rm{A}} - {\rm{Q,S; B}} - {\rm{P,Q,S; C}} - {\rm{R,T;D}} - {\rm{R}}\qquad {\kern 1pt} \qquad \)
2 \({\kern 1pt} {\rm{A}} - {\rm{R; B}} - {\rm{P,S; C}} - {\rm{Q,S; D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
3 \({\rm{A}} - {\rm{P,Q,S; B}} - {\rm{Q,T; C}} - {\rm{R;D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
4 \({\rm{A}} - {\rm{P,Q,R; B}} - {\rm{P; C}} - {\rm{R; D}} - {\rm{Q,S}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321343 In alkaline medium, \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)oxidises \({\mathrm{\mathrm{I}^{-}}}\)to

1 \({\mathrm{\mathrm{IO}_{3}^{-}}}\)
2 \({\mathrm{\mathrm{I}_{2}}}\)
3 \({\mathrm{\mathrm{IO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{IO}^{-}}}\)
JEE Main - 2024
For More Updates join with Us
CHXII08:THE D- & F-BLOCK ELEMENTS

321339 Pyrolusite is used to prepare potassium permanganate
\(\mathrm{\mathrm{MnO}_{2} \stackrel{x}{\longrightarrow} \mathrm{MnO}_{4}^{-2} \stackrel{y}{\longrightarrow} \mathrm{MnO}_{4}^{-} \cdot \mathrm{x}}\) and \(\mathrm{\mathrm{y}}\) are

1 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic reduction
2 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic oxidation
3 Fuse with conc. \(\mathrm{\mathrm{HNO}_{3} /}\)air, electrolytic reduction
4 All are correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321340 Statement A :
Permanganate at \(\mathrm{\left[\mathrm{H}^{+}\right]=1}\) should oxidise water but in practice the reaction is extremely slow.
Statement B :
The above reaction is practically feasible only when either manganese (II) ions are present or the temperature is raised.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII08:THE D- & F-BLOCK ELEMENTS

321341 Match the columns.
supporting img

1 A - P, B - Q, C - R, D - S
2 A - P,Q,R,S, B - P,T, C - R, D - Q,S
3 A - P,S, B - P,S, C - P,Q,R, D - S,
4 A - P,Q,R, B - R, C - P,S, D - P,S
CHXII08:THE D- & F-BLOCK ELEMENTS

321342 Match the columns.
supporting img

1 \({\rm{A}} - {\rm{Q,S; B}} - {\rm{P,Q,S; C}} - {\rm{R,T;D}} - {\rm{R}}\qquad {\kern 1pt} \qquad \)
2 \({\kern 1pt} {\rm{A}} - {\rm{R; B}} - {\rm{P,S; C}} - {\rm{Q,S; D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
3 \({\rm{A}} - {\rm{P,Q,S; B}} - {\rm{Q,T; C}} - {\rm{R;D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
4 \({\rm{A}} - {\rm{P,Q,R; B}} - {\rm{P; C}} - {\rm{R; D}} - {\rm{Q,S}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321343 In alkaline medium, \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)oxidises \({\mathrm{\mathrm{I}^{-}}}\)to

1 \({\mathrm{\mathrm{IO}_{3}^{-}}}\)
2 \({\mathrm{\mathrm{I}_{2}}}\)
3 \({\mathrm{\mathrm{IO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{IO}^{-}}}\)
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321339 Pyrolusite is used to prepare potassium permanganate
\(\mathrm{\mathrm{MnO}_{2} \stackrel{x}{\longrightarrow} \mathrm{MnO}_{4}^{-2} \stackrel{y}{\longrightarrow} \mathrm{MnO}_{4}^{-} \cdot \mathrm{x}}\) and \(\mathrm{\mathrm{y}}\) are

1 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic reduction
2 Fuse with \(\mathrm{\mathrm{KOH} /}\)air, electrolytic oxidation
3 Fuse with conc. \(\mathrm{\mathrm{HNO}_{3} /}\)air, electrolytic reduction
4 All are correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321340 Statement A :
Permanganate at \(\mathrm{\left[\mathrm{H}^{+}\right]=1}\) should oxidise water but in practice the reaction is extremely slow.
Statement B :
The above reaction is practically feasible only when either manganese (II) ions are present or the temperature is raised.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII08:THE D- & F-BLOCK ELEMENTS

321341 Match the columns.
supporting img

1 A - P, B - Q, C - R, D - S
2 A - P,Q,R,S, B - P,T, C - R, D - Q,S
3 A - P,S, B - P,S, C - P,Q,R, D - S,
4 A - P,Q,R, B - R, C - P,S, D - P,S
CHXII08:THE D- & F-BLOCK ELEMENTS

321342 Match the columns.
supporting img

1 \({\rm{A}} - {\rm{Q,S; B}} - {\rm{P,Q,S; C}} - {\rm{R,T;D}} - {\rm{R}}\qquad {\kern 1pt} \qquad \)
2 \({\kern 1pt} {\rm{A}} - {\rm{R; B}} - {\rm{P,S; C}} - {\rm{Q,S; D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
3 \({\rm{A}} - {\rm{P,Q,S; B}} - {\rm{Q,T; C}} - {\rm{R;D}} - {\rm{R,T}}\qquad {\kern 1pt} \qquad {\kern 1pt} \)
4 \({\rm{A}} - {\rm{P,Q,R; B}} - {\rm{P; C}} - {\rm{R; D}} - {\rm{Q,S}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321343 In alkaline medium, \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)oxidises \({\mathrm{\mathrm{I}^{-}}}\)to

1 \({\mathrm{\mathrm{IO}_{3}^{-}}}\)
2 \({\mathrm{\mathrm{I}_{2}}}\)
3 \({\mathrm{\mathrm{IO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{IO}^{-}}}\)
JEE Main - 2024