In $HCHO$,the carbon atom has which hybridization?

The bond length between an $sp^{3}$ hybridized carbon atom and another carbon atom is minimum in:

Among $SO_2, NF_3, NH_3, XeF_2, ClF_3$ and $SF_4$,the hybridization of the molecule with non$-zero$ dipole moment and highest number of lone$-pairs$ of electrons on the central atom is

What is meant by hybridisation? The compound $CH_2 = C = CH_2$ contains $sp$ and $sp^2$ hybridised carbon atoms. Will it be a planar molecule?

Identify the pair of molecules in which the central atom has the same hybridization.

Which of the following is a linear molecule?