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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:

1. Statement I is false but statement II is true
2. Both statement I and statement II are false
3. Both statement I and statement II are true
4. Statement I is true but statement II is false

Correct answer: Both statement I and statement II are false

Solution

Statement II is false: BeO is amphoteric but MgO, CaO etc. are basic, not acidic. Statement I is false: hydrated MgCl2 on heating hydrolyses to MgO/Mg(OH)Cl + HCl rather than simply dehydrating. Hence both statements are false.

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