Computer Science MCQs (Set–29 | Level — Frontier Open Conjectures & Deep Structural Theory 😈🔥)

281. The statement “P ≠ NP” would immediately imply: A) NP ⊄ P B) No NP-Complete problem is solvable in polynomial time C) There exist problems verifiable but not efficiently solvable D) All of the above Answer: D) All of the above 282. The class coNP consists of languages whose complements are in: A) P B) NP C) PSPACE D) EXP Answer: B) NP 283. If PH collapses to level k, then: A) All higher levels equal Σₖ^P B) PSPACE collapses C) NP = PSPACE D) EXP collapses Answer: A) All higher levels equal Σₖ^P 284. The problem of graph isomorphism is currently known to be in: A) P (proven decades ago) B) NP-Complete C) Quasi-polynomial time D) PSPACE-Complete Answer: C) Quasi-polynomial time 285. The class #P deals with: A) Optimization problems B) Counting accepting paths C) Space-bounded computation D) Quantum proofs Answer: B) Counting accepting paths 286. If #P = FP (polynomial-time computable functions), then: A) P = NP B) PH collapses C) PSPACE = NP D) BQP = P Answer: B) PH collapses ...
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Chemistry MCQs – Set 3

 🔬 Chemistry MCQs (Set–3)

21. The modern periodic law was proposed by:
A) John Dalton
B) Dmitri Mendeleev
C) Henry Moseley
D) J.J. Thomson
👉 Answer: C) Henry Moseley

22. Which of the following is a strong acid?
A) Acetic acid
B) Carbonic acid
C) Hydrochloric acid
D) Boric acid
👉 Answer: C) Hydrochloric acid

23. The number of moles present in 22.4 L of a gas at STP is:
A) 0.5 mole
B) 1 mole
C) 2 moles
D) 22.4 moles
👉 Answer: B) 1 mole

24. Which of the following is an exothermic process?
A) Photosynthesis
B) Melting of ice
C) Respiration
D) Sublimation
👉 Answer: C) Respiration

25. The oxidation number of oxygen in H₂O is:
A) –1
B) –2
C) +1
D) +2
👉 Answer: B) –2

26. Which of the following is used as a catalyst in the Haber process?
A) Copper
B) Platinum
C) Iron
D) Nickel
👉 Answer: C) Iron

27. The pH of a strong acid is usually:
A) Greater than 7
B) Equal to 7
C) Less than 7
D) Equal to 14
👉 Answer: C) Less than 7

28. Which of the following is a greenhouse gas?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
👉 Answer: C) Carbon dioxide

29. The chemical formula of quick lime is:
A) CaCO₃
B) CaO
C) Ca(OH)₂
D) CaCl₂
👉 Answer: B) CaO

30. The element with atomic number 1 is:
A) Helium
B) Hydrogen
C) Lithium
D) Oxygen
👉 Answer: B) Hydrogen

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