Which of the following species contains an equal number of σ and Π bond? 

• HCO₃^-

• XeO₄

• (CN)₂

• (CN)₂

Consider the following compounds


Hyperconjugation occurs in 

• I only

• II only

• III only

• III only

The enolic form of ethyl acetoacetate as below has

• 18 sigma bonds and 2 pi-bond

• 16 sigma bonds and 1 pi-bond

• 9 sigma bonds and 2 pi-bond

• 9 sigma bonds and 2 pi-bond

The total number of Pi bond electrons in the following structure is

• 4

• 8

• 12

• 12

655.

The pair of compounds that can exist together is 

• FeCl₃.SnCl₂

• HgCl₂,SnCl₂

• FeCl₂,SnCl₂

• FeCl₂,SnCl₂

Which of the following molecules has the maximum dipole moment?

• CO₂

• CH₄

• NH₃

• NH₃

Which one of the following species has the plane triangular shape?

• N₃

• NO₃^-

• NO₂^-

• NO₂^-

Magnetic moment 2.83 BM is given by which of the following ions?

(At. no.: Ti =22; Cr=24; Mn=25; Ni=28)

• Ti³⁺

• Ni²⁺

• Cr³⁺

• Cr³⁺

Which of the following organic compounds has same hybridization as its combustion product -(CO)₂?

• Ethane

• Ethyne

• Ethene

• Ethene

Bond order of 1.5 is shown by

• O₂⁺

• O₂^-

• O₂^2-

• O₂^2-