In the following question two statements (Assertion) A and...

In the following question two statements (Assertion) A and Reason (R) are given. Mark (a) if $\mathrm{A}$ and $\mathrm{R}$ both are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$ (b) if $\mathrm{A}$ and $\mathrm{R}$ both are correct but $\mathrm{R}$ is not the correct explanation of $A$ (c) $\mathrm{A}$ is true but $\mathrm{R}$ is false (d) $\mathrm{A}$ is false but $\mathrm{R}$ is true (A): Molecules that are not superimposable on their mirror images are chiral. (R): All chiral molecules have chiral centre.

In the following question two statements (Assertion) A and Reason (R) are given. Mark
(a) if $\mathrm{A}$ and $\mathrm{R}$ both are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
(b) if $\mathrm{A}$ and $\mathrm{R}$ both are correct but $\mathrm{R}$ is not the correct explanation of $A$
(c) $\mathrm{A}$ is true but $\mathrm{R}$ is false
(d) $\mathrm{A}$ is false but $\mathrm{R}$ is true
(A): Molecules that are not superimposable on their mirror images are chiral.
(R): All chiral molecules have chiral centre.

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Key Concepts

Chirality

Chirality is a property of asymmetry in molecules where the structure cannot be superimposed on its mirror image. It is a fundamental concept in stereochemistry, affecting how substances interact with biological systems and influencing chemical reactivity and properties. A chiral molecule typically exists in two non-identical forms which are mirror images of each other, known as enantiomers.

Chiral Center

A chiral center, often a carbon atom bonded to four different substituents, is typically responsible for the chirality of a molecule. However, chirality does not exclusively arise from the presence of a chiral center; it may also result from other forms of asymmetry in the molecular structure. Understanding chiral centers is crucial in stereochemistry as they are a common structural feature that gives rise to non-superimposable mirror images.

Assertion and Reason Questions

Assertion and Reason questions are a type of multiple-choice question where two statements are provided—the assertion and the reason. The task is to evaluate the truth of each statement and determine whether the reason correctly explains the assertion. This format tests both knowledge of individual concepts and the ability to logically connect related concepts.

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