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These 20 MCQs are designed for NABARD Grade B 2026. Study the explanations carefully to master Syllogism.
Q1. All A are B. All B are C. Conclusion: All A are C.
Answer: A — Syllogism chain: All A→B→C, so All A are C. True.
Q2. No X is Y. All Y are Z. Conclusion: No X is Z.
Answer: B — No X is Y (E) + All Y are Z (A) = Some Z are not X (O*). We cannot conclude No X is Z. False.
Q3. Some M are N. No N is P. Conclusion: Some M are not P.
Answer: A — Some M are N (I) + No N is P (E) = Some M are not P (O). True.
Q4. All cats are animals. Some animals are wild. Conclusion: Some cats are wild.
Answer: B — All cats are animals + Some animals are wild → middle term 'animals' undistributed → no definite conclusion. False.
Q5. All birds fly. Penguin is a bird. Conclusion: Penguin flies.
Answer: A — Valid syllogism: All birds fly + Penguin is a bird → Penguin flies. True (logically).
Q6. No glass is paper. All paper is soft. Conclusion: No glass is soft.
Answer: B — E+A = O* (Some soft things are not glass). Cannot say No glass is soft. False.
Q7. Some rivers are deep. All deep things are dangerous. Conclusion: Some rivers are dangerous.
Answer: A — I+A = I: Some rivers are dangerous. True.
Q8. All politicians are leaders. No leader is honest. Conclusion: No politician is honest.
Answer: A — A+E = E: No politician is honest. True.
Q9. Some books are novels. Some novels are interesting. Conclusion: Some books are interesting.
Answer: B — I+I = No conclusion. False.
Q10. All trains are vehicles. All vehicles are machines. No machine is alive. Conclusion: No train is alive.
Answer: A — All trains→vehicles→machines + No machine is alive → No train is alive. True.
Q11. Some apples are red. All red things are beautiful. Conclusion: All apples are beautiful.
Answer: B — I+A = I (Some apples are beautiful). Cannot say All apples are beautiful. False.
Q12. All A are B. No B is C. Some D are C. Conclusion I: No A is C. Conclusion II: Some D are not B.
Answer: C — No A is C (A+E=E) ✓. Some D are C + No B is C → Some D are not B (I+E=O*) ✓. Both.
Q13. Some students are honest. All honest people are hardworking. Conclusion: Some students are hardworking.
Answer: A — I+A=I: Some students are hardworking. True.
Q14. All roses are flowers. Some flowers are fragrant. Conclusion: All roses are fragrant.
Answer: B — A+I → middle term undistributed → no conclusion. All roses are fragrant is False.
Q15. No athlete is weak. Suresh is an athlete. Conclusion: Suresh is not weak.
Answer: A — No athlete is weak + Suresh is athlete → Suresh is not weak. True.
Q16. Some pens are caps. All caps are clips. Conclusion I: Some pens are clips. Conclusion II: All clips are caps.
Answer: A — I: Some pens are caps + All caps are clips = Some pens are clips ✓. II: All clips are caps is invalid reverse. Only I.
Q17. All water is liquid. Ice is water. Conclusion: Ice is liquid.
Answer: A — Logically valid syllogism: True.
Q18. Some mangoes are sweet. All sweets are tasty. Conclusion: Some mangoes are tasty.
Answer: A — I+A=I: Some mangoes are tasty. True.
Q19. No fish is a mammal. All whales are mammals. Conclusion: No fish is a whale.
Answer: A — No fish is mammal + All whales are mammals → No fish is whale. True (E+A from whale's perspective = E conversion).
Q20. Some clouds are dark. All dark things cause rain. Conclusion I: Some clouds cause rain. Conclusion II: All things that cause rain are dark.
Answer: A — I: I+A=I ✓. II: Invalid conversion. Only I.
