NEET Practice Questions (MCQs) with Answers & Solutions

Among given species identify the isostructural pairs:

Consider the following information (X=F or Cl)

Molecule     P-X(axial)       P-X(Equitorial) 

                 bond length     bond length

PF_{5                     a                        b}

PF₄CH_{3            c                        d}

PF₃(CH₃)_{2       e                       f}

PCl_{5                   g                      h}

According to information choose the incorrect order of bond length :

In which of the following cases $\mathrm{C}—\mathrm{C}$ bond length will be highest?

Which of the following statement is correct in the context of the allene molecules, $C_3{H}_4$?

Select the incorrect statement about ${\mathrm{N}}_2{\mathrm{F}}_{4 }\mathrm{and} {\mathrm{N}}_2{\mathrm{H}}_4$:

(i) In${\mathrm{N}}_2{\mathrm{F}}_4$, d-orbitals are contracted by electronegative fluorine atoms, but d-orbitals contaraction is not possible by H-atom in ${\mathrm{N}}_2{\mathrm{H}}_4$

(ii) The N-N bond energy in ${\mathrm{N}}_2{\mathrm{F}}_4$ is lesser than N-N bond energy in ${\mathrm{N}}_2{\mathrm{H}}_4$

(iii) The N-N bond length in ${\mathrm{N}}_2{\mathrm{F}}_4$ is more than that in ${\mathrm{N}}_2{\mathrm{H}}_4$

(iv) The N-N bond length in ${\mathrm{N}}_2{\mathrm{F}}_4$ is less than that in ${\mathrm{N}}_2{\mathrm{H}}_4$

Choose the correct code:

The shape of $Xe{F_3}^{+}$ is :

Which of the following shape are not possible for possible value of 'n' in $XeFn$ molecule?

Which of the following compound has maximum "C$—$C" single bond length?

Which statement is true about the most stable Lewis structure for $C{S}_2$ ?

Minimum $\mathrm{F}—\mathrm{S}—\mathrm{F}$ bond angle present in: