Exercise 4

Among the following, the strongest acid is:

Among the following the weakest base is:
 

Pyridine is less basic than triethylamine because:

The decreasing order of the stability of the ions:

The correct order of increasing bond length of $\mathrm{C}-\mathrm{H}, \mathrm{C}-\mathrm{O}, \mathrm{C}-\mathrm{C}$ and $\mathrm{C}=\mathrm{C}$ is:

Given

Which of the given compounds can exhibit tautomerism

The correct increasing order of basic strength for the following compounds is :

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of: