Geometry of ammonia molecule and the hybridisation of nitrogen involved in it are

• sp³-hybridisation and tetrahedral geometry

• sp³-hybridisation and distorted tetrahedral geometry

• sp²-hybridisation and triangular geometry

• None of the above

Be in BeCl₂ undergoes

• diagonal hybridisation

• trigonal hybridisation

• tetrahedral hybridisation

• no hybridisation

In 1- butene number of σ-bonds is

• 8

• 10

• 11

• 12

The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJ mol^-1) of C-C, Si-Si and Ge-Ge bonds, respectively are

• 167, 180, 348

• 180, 167, 348

• 348, 167, 180

• 348, 180, 167

165.

The number of lone pairs of electrons present on : Xe in XeF₄ is

• 3

• 4

• 1

• 2

Which one of the following ions exhibits highest magnetic moment ?

• Cu²⁺

• Ti³⁺

• Ni²⁺

• Mn²⁺

Which of the following statements is true?

• Hybridisation of the central atom in NH₃ and CH₄ is sp²

• BeCl₂ has V shape while SO₂ is linear

• SF₆ is octahedral and F-S-F bond angle is 90°

• CO₂ has dipole moment

Bond dissociation energies of HF, HCl, HBr follow the order

• HCl > HBr > HF

• HF > HBr > HCl

• HF > HCl > HBr

• HBr > HCl > HF

Which one ofthe following is a correct set?

• H₂O, sp³, angular

• H₂O, sp², linear

• NH₄⁺, dsp²,square planar

• CH₄, dsp², tetrahedral

The bond energies (in kJ mol^-1) of P-H; As- H and N-H are respectively

• 247, 389 and 318

• 247, 389 and 318

• 318, 389 and 247

• 318, 247 and 389