Which of the following alkenes have more value of heat of hydrogenation than 

 

Are all carbon atoms in given compound in one plane?

Write the conjugate acid and conjugate base of the following:

${\mathrm{HNO}}_3$

Which is the stronger base in each of the following pairs?

${\mathrm{HS}}^{-}$ and ${\mathrm{F}}^{-}$

Arrange the following compounds for their acidic strength order.

The greater volatility of $2$-Nitrophenol, compared with $4$-Nitrophenol isomer is attributed to:

Basic strength of 

will be in order -