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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceAssertion–reasonMediumConceptual

JEE Main 1 February 2024, Shift 2, Chemistry Q69

Question 69 of 90 in this shift, Chemistry question 9 of 30, Section A.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In aqueous solutions Cr2+\mathrm{Cr^{2+}} is reducing while Mn3+\mathrm{Mn^{3+}} is oxidising in nature. Reason (R) : Extra stability to half filled electronic configuration is observed than incompletely filled electronic configuration. In the light of the above statements, choose the most appropriate answer from the options given below :
  1. (1)Both (A) and (R) are true and (R) is the correct explanation of (A)Official answer
  2. (2)Both (A) and (R) are true but (R) is not the correct explanation of (A)
  3. (3)(A) is true but (R) is false
  4. (4)(A) is false but (R) is true

Official answer

Option 1

NTA final key.