In the Born-Haber cycle for the formation of solid common salt (NaCl), the largest contribution comes from-

Which of the following molecule is having complete octet-

In a homonuclear molecule which of the following set of orbitals are degenerate?

MolecularorbitalelectronicconfigurationofBe2, willbe-
a)KK, σ2s²
b)KK,σ2s²,σ*2s²
c)σ1s²,σ*1s²,σ2s²,σ*2s²
d)σ1s²,σ*1s²,σ2s²,2p²Correctansweris-

Which of the following species will have the minimum bond energy:

The transformed equation of when the axes are translated to (1, –2) is

shifting of origin is done when the aes are shifted parallely to a different location on the cartesian plane.
this results in change  of coordinates as: x=x'+h and y=y'+k
where h,k are the new origin.

N₂ and O₂ are converted into mono an ions, N₂ and O₂ respectively. Which of the following statements is wrong?

The ion that is isoelectronic with CO and having same bond order is:

Whichofthefollowingspeciesarepolar:
1)CH
2)XeF
3)SO₂
4)SF₄
5)SF₆correctansweris:

Cathode rays are made to pass between the poles of a magnet as shown in figure. The effect of magnetic field is

will have the dimensional formula of :

Which of the following ions is discharged at the cathode when an aqueous solution of sodium hydroxide is electrolysed ?

Which of the following reaction is possible at anode ?

When an aqueous solution of copper sulphate is electrolysed using copper electrodes the reaction at the anode is represented by

During the electrolytic reduction of alumina, the reaction at cathode is

Molten CuCl₂ is electrolysed using platinum electrode The reaction occuring at anode is