Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

For B₂ (10 $e$ ) the MO configuration is (σ1s)² (σ*1s)² (σ2s)² (σ*2s)² ( $π$ 2p $_{x}^{1}$ = $π$ 2p $_{y}^{1}$ )

Due to presence of unpaired electron $\{π 2 p_{x}^{1} = π 2 p_{y}^{1}\}$ it shows paramagnetism.

C₂(12 $e$ ) the MO configuration is (σ1s)² (σ*1s)² (σ2s)² ( $π$ 2p $_{x}^{2}$ = $π$ 2p $_{y}^{2}$ )

No unpaired electrons are there in C₂ $\{π 2 p_{x}^{2} = π 2 p_{y}^{2}\}$ , hence it shows diamagnetism.

622.

Dipole moment of is 1.5 D. The dipole moment of is

623.

The hybridisation of C₂ and C₃ of H₃C-CH=C=CH-CH₃ are:

624.

Hybridisation of central atom in NF₃ is

625.

Which one of the following contains P-O-P bond?

626.

Which of the following orbitals will have zero probability of finding the electron in the y_Zplane.

627.

What type of orbital hybridisation is considered on P in PCl₅?

628.

The bond order of CO molecule is

629.

The bond order in O $_{2}^{-}$ ion is

630.

The molecule having largest dipole moment among the following is :