Given below are two statements :

Statement I : Both CaCl₂ . 6H₂O and MgCl₂ . 8H₂O undergo dehydration on heating.

Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below :

Which among the following pairs of Vitamins is stored in our body relatively for longer duration?

The process that involves the removal of sulphur from the ores is :

Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : Size of Bk³⁺ ion is less than Np³⁺ ion.

Reason R : The above is a consequence of the lanthanoid contraction.

In the light of the above statements, choose the correct answer from the options given below :