Theoretical Basis of Organic Reactions

Correct order of rate hydrolysis or rate of reaction towards AgNO₃ for following compounds is: 

   

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Write correct order of stability of following carbocations :

            

          

The most stable canonical structure of this molecule is:

In which of the following molecules / ions resonance structures are equivalent:

Among these compounds,  the correct order of C–N bond length is :

There are three canonical structures of naphthalene. Examine them and find the correct statement among the following:

Rank the following free radicals in order of decreasing stability:

$\left(\text{I}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{\text{C}}{\text{HC}}_6{\text{H}}_5$

$\left(\text{I}\text{I}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{-\text{C}\text{H}}-\text{C}\text{H}={\text{C}\text{H}}_2$

$\left(\text{I}\text{I}\text{I}\right)\text{C}{\text{H}}_3\stackrel{•}{-\text{C}\text{H}}-\text{C}{\text{H}}_3$

$\left(\text{I}\text{V}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{-\text{C}\text{H}}-\text{C}{\text{H}}_3$

$\left(\text{V}\right)\text{C}{\text{H}}_3{\text{CH}}_2{\text{CH}}_2{{\text{CH}}_2\stackrel{•}{\text{C}}\text{H}}_2$

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In which of the following pairs, is the first species is more stable than second?

In this molecules, π-electron-density is more on

In which of the following molecules π-electron density in ring is maximum ?

In which of the following molecules π-electron density in ring is minimum ?

Which of the following compounds has maximum electron density in ring ?

Which of the following compounds has maximum electron density in ring ?

In phenol, π - electron - density is maximum on

The least stable canonical structure among these is

The order of stability of these canonical forms is:

Among these canonical structures of pyridine, the correct order of stability is

The most stable resonating structure of following compound is

$\left(\mathrm{I}\right){\mathrm{CH}}_3-\mathrm{O}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}=\mathrm{CH}}_2$

$\left(\mathrm{II}\right){\mathrm{CH}}_3-\mathrm{O}-\stackrel{\oplus }{\mathrm{C}}\mathrm{H}-\mathrm{CH}={\mathrm{CH}-\stackrel{\ominus }{\mathrm{C}}\mathrm{H}}_2$

$\left(\mathrm{III}\right){\mathrm{CH}}_3-\stackrel{\oplus }{\mathrm{O}}=\mathrm{CH}-\mathrm{CH}={\mathrm{CH}-\stackrel{\ominus }{\mathrm{C}}\mathrm{H}}_2$

Among these three canonical structures (through more are possible) what would be their relative contribution in the hybrid?

${\text{C}\text{H}}_2=\text{CH}-\text{C}\text{H}=\text{C}\text{H}-{\text{CH}}_3$ is more stable than ${\text{CH}}_3-\text{CH}=\text{C}=\text{CH}-{\text{CH}}_3$ because