The correct stability order of the given tautomers is:

The urea molecule $\left[ H_2N-C(=O)-NH_2 \right]$ exhibits which type of isomerism?

The compound $CHCl=CHCHOHCOOH$ with molecular formula $C_4H_5O_3Cl$ can exhibit:

Which of the following molecules are chiral?

Identify the correct sequence for True and False.
$(I)$ Only compounds with chiral centers can be optically active.
$(II)$ Absence of elements of symmetry is the reason for a molecule's optical activity.
$(III)$ All organic compounds contain carbon $\&$ hydrogen.
$(IV)$ Different canonical forms of a molecule represent the actual structures of a molecule which has resonance in it.

Which of the following statements is $NOT$ correct?