Chemistry MCQs for NEET — Practice Questions with Answers

Which pair of atom form strongest ionic bond?

The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:

(i) ${\mathrm{CO}}_3^{2-}$           (ii) ${\mathrm{XeF}}_4$                (iii) ${\mathrm{I}}_3$                     (iv) ${\mathrm{NCI}}_3$                         (v) ${\mathrm{BeCl}}_2$

How many resonance forms can be written for the nitrate ion, ($N{O_3}^{-}$)?

Which of the following fact is directly explained by the statement 'oxygen is a simillar atom than sulpher'?

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 :