engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test General Science Chemistry Organic Chemistry
निम्न में से सर्वाधिक स्थायी कार्बोकैटायन है -
1
CH3 − \(\stackrel{\oplus}{\text{C}}\text{H}\) − CH2 − CH2 − CH3
2
CH3 − CH2 − \(\stackrel{\oplus}{\text{C}}\text{H}_{2}\)
3
(CH3)3C − \(\stackrel{\oplus}{\text{C}}\text{H}\) − CH3
4
CH3 − CH2 − \(\stackrel{\oplus}{\text{C}}\text{H}\) − CH2 − CH3