Paper 1 · Logical Reasoning
UGC NET December 2023 (14.12.2023) Shift-II
Which of the following statements is logically equivalent to the statement 'All beverages are liquid'?
AAll non-liquids are non-beverages ✓ Correct
BSome beverages are liquid
CAll liquids are beverages
DSome liquids are beverages
Correct answer: (A) All non-liquids are non-beverages — The equivalent statement is all non-liquids are non-beverages, so that is the answer.
Explanation
★The equivalent statement is all non-liquids are non-beverages, so that is the answer.
★All beverages are liquid is a type A universal affirmative.
★Its contrapositive negates and swaps the terms while keeping the meaning.
★So it becomes all non-liquids are non-beverages.
★The contrapositive of a type A statement always has the same truth value.
★The other options change the quantity or direction and are not equivalent.
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