Assertion: Carbon dioxide is a molecule with a linear shape.
Reason: Carbon dioxide has two polar covalent bonds and no lone pairs of electrons on the central carbon atom.
Both assertion and reason are true, and the reason is the correct explanation of the assertion.
Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
The assertion is true, but the reason is false.
The assertion is false, but the reason is true.
The correct answer is (A) Both assertion and reason are true, and the reason is the correct explanation of the assertion. Carbon dioxide is a linear molecule because it has two polar covalent bonds and no lone pairs of electrons on the central carbon atom, which results in a symmetrical distribution of electron density around the molecule. Hence option A is the correct answer.
Option (B) is incorrect because it incorrectly states that the assertion is correct but the reason is incorrect. Both the assertion and reason are correct. Hence option B is incorrect.
Option (C) is incorrect because it incorrectly states that the assertion is incorrect but the reason is correct. The assertion is correct, and the reason is also correct. Hence option C is incorrect.
Option (D) is incorrect because it incorrectly states that both the assertion and reason are incorrect. Both the assertion and reason are correct. Hence option D is incorrect.