Which of the following is comproportionation reaction :

An alkane cannot be chlorinated by using which of the following reagents?

In which of the following pairs, the two species are not isostructural?

Aldehyde and ketone undergo nucleophilic addition reaction because of polarity between $>C=O$ group . The reactivity of carbonyl groups toward nucleophile depends upon the nature of inductive effect of froup present at carbonyl carbon.
Which among the following is more reactive towards nucleophilic addition reaction

Aldehyde and ketone undergo nucleophilic addition reaction because of polarity between $>C=O$ group . The reactivity of carbonyl groups toward nucleophile depends upon the nature of inductive effect of froup present at carbonyl carbon.
Nucleophilic addition reaction over carbonyl compound is shown by :

Indicate the correct of acidity (first ionization) in the following dicarboxylic acids :

Gases posses characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.
\displaystyle{\left.\begin{array}{ccccc} \text{Gases}&{H}_{{{2}}}&{H}{e}&{O}_{{{2}}}&{N}_{{{2}}}\\\text{Critical temperature in kelvin}&{33.2}&{5.3}&{154.3}&{126}\end{array}\right.}
From the above data what would be the order of liquefaction of these gases ? Start writing the order from the gas liquefying first

The orbital angular momentum of an electron is
$\sqrt{3}\frac{h}{\pi }.$ Which of the following should not be the permissible value of orbit angular momentum of this electron revolving in Bohr orbit ?

In hydrogen spectrum, the spectral line of Balmer series having lowest wavelength is

In which of the following cases, the reaction goes farthest to completion?