Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202117 MarchMorning Shift
Exam
JEE Main
Year
2021
Date
17 March
Shift
Morning Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2021 · 17 March · Morning Shift · Chemistry · d and f Block Elements

Given below are two statements: Statement I: Potassium permanganate...

Given below are two statements:
Statement I: Potassium permanganate on heating at 573K573K forms potassium manganate.

Statement II: Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature.

In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: Statement I: Potassium permanganate on heating at 573K forms potassium manganate.

Options

  1. AStatement I is true but statement II is false
  2. BBoth statement I and statement II are true
  3. CStatement I is false but statement II is true
  4. DBoth statement I and statement II are false

Correct answer

A. Statement I is true but statement II is false

Step-by-step solution

2KMnO4Potassiumpermanganate⟶573KK2MnO4Potassiummanganate+MnO2+O2\mathop{2{KMnO}_{4}}_{Potassiumpermanganate}\overset{573K}{⟶}\mathop{{K}_{2}{MnO}_{4}}_{Potassiummanganate} + {MnO}_{2} + {O}_{2}

Given below are two statements: Statement I: Potassium permanganate on heating at 573K forms potassium manganate.

Statement-I is correct.

Statement-II is incorrect.

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Given below are two statements: Statement I: The number of pairs among [Ti^ 4+ , V^ 2+ ]… JEE Main 2026Given below are two statements for catalytic properties of transition metals. Statement… JEE Main 2026The correct order of first (Δ_i H_1) and second (Δ_i H_2) ionisation enthalpy values of… JEE Main 2026The correct statements among the following are. A. Basic vanadium oxide is used in the… JEE Main 2026Given below are two statements : Statement I: Presence of large number of unpaired… JEE Main 2026A paper dipped in a dil. H_2SO_4 solution of ' X ' upon treatment with SO_2 gas turns… JEE Main 2026Which of the following is NOT a physical or chemical characteristics of interstitial… JEE Main 2026Pairs of elements with the same number of electrons in their respective 4f orbital are… JEE Main 2026 Full d and f Block Elements list All JEE Main PYQs