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Statement-I: An alloy of lithium and magnesium is used to make aircraft plates. Statement-II: The magnesium ions are important for cell-membrane integrity. In the light of the above statements, choose the correct answer from the options given below:

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

Correct answer: Both Statement-I and Statement-II are false

Solution

Statement-I is incorrect because while lithium and magnesium can be used in alloys, they are not typically used together for aircraft plates. Statement-II is also false as magnesium ions are not primarily known for their role in cell-membrane integrity, but rather for other biological functions.

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