JEE Main 2020 · ChemistryMultiple choiceDiagram basedHardConceptual
JEE Main 3 September 2020, Shift 2, Chemistry Q42
Question 42 of 75 in this shift, Chemistry question 17 of 25.
The decreasing order of reactivity of the following compounds towards nucleophilic substitution () is :
(I) [figure]
(II) [figure]
(III) [figure]
(IV) [figure]
The figure, in words
Four benzene-type rings (hexagon with circle), drawn with commas between and labelled (I) to (IV). (I): ring with CH2Cl on a vertical line above it, no other substituent. (II): ring with CH2Cl above; one NO2 attached at the upper right of the ring next to the CH2Cl carbon and a second NO2 at the lower right. (III): ring with CH2Cl on a vertical line above; one NO2 at the lower right of the ring and a second NO2 on a vertical line below the ring at lower left. (IV): ring with CH2Cl on a vertical line above; O2N at the lower left and NO2 at the lower right.- (1)(III) > (II) > (IV) > (I)
- (2)(IV) > (II) > (III) > (I)
- (3)(II) > (III) > (I) > (IV)
- (4)(II) > (III) > (IV) > (I)Official answer
Official answer
Option 4
NTA final key (Sep 2020).
- Chapter
- Haloalkanes and Haloarenes
- Idea tested
- Allylic and Benzylic Reactivity in SN2