Free radical formation will take place in :

1.
2.
3.
4.

The arrangement in decreasing order of stability of $\stackrel{\bullet }{C}$H₃, $\stackrel{\bullet }{C_2}$H₅,(CH₃)₂$\stackrel{\bullet }{C}$H and (CH₃)₃ $\stackrel{\bullet }{C}$ free radicals is-

1. $\stackrel{\bullet }{C}$H₃ > $\stackrel{\bullet }{C_2}$H₅ > (CH₃)₂$\stackrel{\bullet }{C}$H > (CH₃)₃ $\stackrel{\bullet }{C}$  

2. (CH₃)₃ $\stackrel{\bullet }{C}$ > (CH₃)₂$\stackrel{\bullet }{C}$H > $\stackrel{\bullet }{C_2}$H₅ > $\stackrel{\bullet }{C}$H₃

3. $\stackrel{\bullet }{C_2}$H₅ > $\stackrel{\bullet }{C}$H₃ > (CH₃)₂$\stackrel{\bullet }{C}$H > (CH₃)₃ $\stackrel{\bullet }{C}$

4. (CH₃)₃ $\stackrel{\bullet }{C}$ > (CH₃)₂$\stackrel{\bullet }{C}$H >  $\stackrel{\bullet }{C}$H₃  >$\stackrel{\bullet }{{\mathrm{ C}}_2}$H₅ 

Which carbocation is the most stable among the options provided?

1.		2.
3.		4.

The most stable carbocation among the following is:

1.		2.
3.		4.

A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-

1. + R effect of ${CH}_3$ groups 

2. $-$R effect of $-$ CH₃  groups 

3. Hyperconjugation 

4. $-$l effect of $-$CH₃ groups 

Which of the following statements accurately describes the stability of allyl and propyl carbocations?

1. Allyl carbocation (CH₂=CH-CH₂⁺) is more stable than propyl carbocation

2. Propyl carbocation is more stable than allyl carbocation

3. Both are equally stable

4. None of the above

The species that contains only three pairs of electrons among the following is-

Which of the following species exhibits paramagnetism?

The decreasing order of the stability of the given ions is-

(I).		(II).
(III).

The compound that gives the most stable carbonium ion after C- Cl bond ionisation among the following  is-

1.		2.
3.		4.