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GK QUESTION#3173

Assertion (A): Mercury is always present in an amalgam. Reason (R): Amalgams are alloys of mercury with one or more other metals.

  1. ABoth A and R are true, and R is the correct explanation of ACorrect answer
  2. BBoth A and R are true, but R is not the correct explanation of A
  3. CA is true, but R is false
  4. DA is false, but R is true
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Answer

A. Both A and R are true, and R is the correct explanation of A

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Explanation

An amalgam is an alloy containing mercury with another metal or metals. This definition directly explains why mercury is present. Both statements are true and the reason explains the assertion, so A is correct.

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