mdcat logical reasoning MCQ #423

A student claims: 'If a solution is acidic, it turns litmus red. Litmus turned red.' What follows?

mdcat logical reasoning MCQ #423

  1. Question 1

    Q1. A student claims: 'If a solution is acidic, it turns litmus red. Litmus turned red.' What follows?

    • A) The solution is acidic.
    • B) Acids always turn litmus red.
    • C) The solution is not basic.
    • D) Red litmus indicates acidity.

    Answer: The solution is acidic.

    Explanation: Affirming the consequent (invalid). The solution is acidic is correct because it matches what the question requires. USAT, HAT and MDCAT analytical sections repeat this pattern.