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JEE Main · 2022 · 28 Jul 2022 · Shift 2 · s-Block Elements

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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 the above statements, choose the correct answer from the options given below
  1. (A)Both Statement I and Statement II are true
  2. (B)Both Statement I and Statement II are false✓ Correct
  3. (C)Statement I is true but Statement II is false
  4. (D)Statement I is false but Statement II is true

Answer: (B)

Solution

Statement I is false: An alloy of lithium and magnesium is used to make armour plates, not aircraft plates. Statement II is also false: Calcium ions (not magnesium) are important for cell-membrane integrity and neuromuscular function. Therefore, both statements are false.

JEE Main · 2022 · 28 Jul 2022 · Shift 2 · Single correct option

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