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–33)

 Here are 🔬  Chemistry MCQs – Set 33 (Elite Olympiad Level + Conceptual Traps 🔥🔥🔥🔥🔥)

321. The maximum number of electrons that can have n = 3 and l = 2 is:

A) 6
B) 10
C) 5
D) 8
👉 Answer: B
(3d subshell → 5 orbitals × 2 electrons = 10)

322. Which of the following has highest lattice energy?
A) NaF
B) MgO
C) CaO
D) Al₂O₃
👉 Answer: D
(Higher charge product → higher lattice energy)

323. The number of π-bonds in benzene is:
A) 2
B) 3
C) 4
D) 6
👉 Answer: B

324. The pH of 0.01 M NaOH solution is:
A) 10
B) 11
C) 12
D) 13
👉 Answer: C

325. Which species has bond order 1.5?
A) O₂
B) O₂⁻
C) O₂²⁻
D) N₂
👉 Answer: B

326. The hybridization of carbon in benzene is:
A) sp
B) sp²
C) sp³
D) dsp²
👉 Answer: B

327. Which of the following is strongest acid?
A) HClO
B) HClO₂
C) HClO₃
D) HClO₄
👉 Answer: D

328. The number of unpaired electrons in Fe³⁺ (high spin, d⁵) is:
A) 3
B) 4
C) 5
D) 1
👉 Answer: C

329. For a first-order reaction, the time required for 99% completion is approximately:
A) 4 half-lives
B) 5 half-lives
C) 6 half-lives
D) 7 half-lives

👉 Answer: D
(≈6.64 half-lives → closest 7)

330. The geometry of BrF₅ is:
A) Trigonal bipyramidal
B) Square pyramidal
C) Octahedral
D) T-shaped

👉 Answer: B

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