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Chemistry · Some Basic Concepts of Chemistry

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Precision refers to the closeness of various measurements for the same quantity, whereas accuracy is the agreement of a particular value to the true value. Reason (R): Measurements that are precise are always accurate. In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.

Correct answer · Option 3

(A) is true but (R) is false.

Explanation

Precise measurements can be close to each other but far from the true value (due to systematic error), hence precise measurements are not necessarily accurate.
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