engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test General Science Chemistry Organic Chemistry
Which of the following is correct with respect to – I effect of the substituents? (R = alkyl)
1
– NH2 < – OR < – F
2
– NR2 < – OR < – F
3
– NR2 > – OR > – F
4
– NH2 > – OR > – F