Q 1 :    

The correct stability order of carbocation is                         [2024]

• ${\left({\mathrm{CH}}_3\right)}_3{\mathrm{C}}^{+}>{\mathrm{CH}}_3-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2>{\left({\mathrm{CH}}_3\right)}_2\stackrel{+}{\mathrm{C}}\mathrm{H}>\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3$

   

• $\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3>{\left({\mathrm{CH}}_3\right)}_2\stackrel{+}{\mathrm{C}}\mathrm{H}>{\mathrm{CH}}_3-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2>{\left({\mathrm{CH}}_3\right)}_3\stackrel{+}{\mathrm{C}}$

   

• ${\left({\mathrm{CH}}_3\right)}_3\stackrel{+}{\mathrm{C}}>{\left({\mathrm{CH}}_3\right)}_2\stackrel{+}{\mathrm{C}}\mathrm{H}>{\mathrm{CH}}_3-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2>\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3$

   

• $\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3>{\mathrm{CH}}_3-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2>{\mathrm{CH}}_3-\underset{\stackrel{|}{{\mathrm{CH}}_3}}{\overset{+}{\mathrm{CH}}}>{\left({\mathrm{CH}}_3\right)}_3{\mathrm{C}}^{+}$

   

Q 2 :    

A species having carbon with sextet of electrons and can act as electrophile is called                 [2024]

• pentavalent carbon

   

• carbon free radical

   

• carbocation  

   

• carbanion

   

Q 3 :    

Correct order of stability of carbanion is                          [2024]

• d > a > c > b

   

• d > c > b > a

   

• a > b > c > d

   

• c > b > d > a

   

Q 4 :    

The shape of carbocation is:                         [2024]

• tetrahedral

   

• trigonal planar

   

• diagonal pyramidal

   

• diagonal

   

Q 5 :    

Number of carbocation from the following that are not stabilized by hyperconjugation is……….                 [2024]