Spotting the one claim the passage does not support — science and technology passages

CAT has tested this idea 30 times across 17 papers, from 2017 to 2025. Solve one, and the others are the same method with different numbers or wording, which is why repeated concepts are the most efficient thing to practise.

Question	What it asks	Answer
CAT 2017 Slot 1 · VARC Q20	speciation and gene flow; which statement is NOT true according to the passage	B
CAT 2017 Slot 2 · VARC Q8	the subnivium; which statement about it is NOT true	B
CAT 2018 Slot 1 · VARC Q2	single-use plastic; which is NOT listed as a negative effect of plastics	B
CAT 2018 Slot 1 · VARC Q8	elephant aggression; which claim the passage does NOT make	A
CAT 2018 Slot 2 · VARC Q24	saturn's rings and moons; which conclusion the passage does NOT allow	C
CAT 2018 Slot 2 · VARC Q6	grove snails in ireland and the pyrenees; which evidence does NOT support sea trade	A
CAT 2019 Slot 1 · VARC Q13	emperor penguin plumage; which finding would NOT negate the study	D
CAT 2020 Slot 1 · VARC Q7	elephant seal call dialects; which inference from le boeuf's study is wrong	B
CAT 2021 Slot 1 · VARC Q13	cuttlefish marshmallow test; which is not a difference between the two versions	A
CAT 2021 Slot 1 · VARC Q16	cuttlefish marshmallow test; which claim cannot be inferred from schnell's experiment	A
CAT 2021 Slot 3 · VARC Q6	accuracy and entropy in clocks; which argument the author does not make	B
CAT 2021 Slot 3 · VARC Q8	accuracy and entropy in clocks; the only statement that can be inferred	B
CAT 2022 Slot 2 · VARC Q1	octopuses as molluscan misfits; reasons they are misfits, except	B
CAT 2022 Slot 2 · VARC Q2	cephalopod camouflage machinery; which would not weaken their camouflaging adeptness	D
CAT 2022 Slot 2 · VARC Q4	cephalopod camouflage; which statement about it is not true	A
CAT 2022 Slot 3 · VARC Q1	sophisticated software deskilling its users; author's reasons for worry, except	C
CAT 2022 Slot 3 · VARC Q3	human-centered automation; all are examples of it except	B
CAT 2022 Slot 3 · VARC Q7	extracting the logic of bios; nothing here is implied by the passage except	C
CAT 2023 Slot 1 · VARC Q13	wolves returning to lozere, france; problems residents face, except	C
CAT 2023 Slot 1 · VARC Q14	wolves in lozere; which factor has not contributed to the growing wolf population	B
CAT 2023 Slot 2 · VARC Q4	second-hand clothing in the uk; why resale firms like thredup have not caught on, except	C
CAT 2024 Slot 1 · VARC Q5	western barred bandicoot; the option that does not describe its characteristics	D
CAT 2024 Slot 2 · VARC Q12	technological externalities and leaded fuel; the view the author would not support	C
CAT 2024 Slot 2 · VARC Q15	secondary effects of inventions; the item not listed as an 'externality'	C
CAT 2024 Slot 3 · VARC Q4	planetary protection on mars; the reason the author does not give for dismissing it	B
CAT 2024 Slot 3 · VARC Q6	space contamination rules; the one claim the author would disagree with	C
CAT 2025 Slot 1 · VARC Q1	complex systems and heavy-tailed events; which inference the passage does not support	A
CAT 2025 Slot 2 · VARC Q20	instruments and the 'new astronomy'; the only statement that contradicts the passage	B
CAT 2025 Slot 2 · VARC Q21	optical versus new astronomy; the one statement that is a valid inference	C
CAT 2025 Slot 2 · VARC Q7	mexican tetra cavefish; the quoted line that does not describe an adaptation	D

Part of RC · Science & Technology (138 questions since 2017).