JEE Main202116 Mar 2021Morning ShiftChemistrys Block ElementsActual
Given below are two statements: Statement I : Both CaCl 2 . 6 H 2 O and MgCl 2 . 8 H 2 O 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:
Options
- AStatement I is false but statement II is true
- BBoth statement I and statement II are false
- CBoth statement I and statement II are true
- DStatement I is true but statement II is false
Correct answer
B. Both statement I and statement II are false
Step-by-step solution
(a) CaCl 2 . 6 H 2 O ⟶ Δ CaCl 2 ( Anhydrous ) + 6 H 2 O (b) MgCl 2 . 8 H 2 O ⟶ Δ MgO + 2 HCl + 6 H 2 O The dehydration of hydrated chloride of calcium can be achieved. The corresponding hydrated chloride of magnesium on heating suffer hydrolysis. (c) BeO → Amphoteric