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:
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:
- (A)Statement I is false but statement II is true
- (B)Statement I is true but statement II is false
- (C)Both statement I and statement II are false✓ Correct
- (D)Both statement I and statement II are true
Answer: (C)
Solution
Statement I is TRUE: Both CaCl₂·6H₂O and MgCl₂·8H₂O are hydrated salts that lose water molecules on heating (dehydration).
Statement II is FALSE: BeO is indeed amphoteric (reacts with both acids and bases), but the oxides of other alkaline earth metals (Mg, Ca, Sr, Ba) in the same group are BASIC, not acidic. They react with acids to form salts and water.
Therefore, Statement I is true but Statement II is false, which corresponds to option (B).
Statement II is FALSE: BeO is indeed amphoteric (reacts with both acids and bases), but the oxides of other alkaline earth metals (Mg, Ca, Sr, Ba) in the same group are BASIC, not acidic. They react with acids to form salts and water.
Therefore, Statement I is true but Statement II is false, which corresponds to option (B).
JEE Main · 2021 · 16 Mar 2021 · Shift 1 · Single correct option