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–35)

 Here are 🔬 Chemistry MCQs – Set 35 (Ultra-Extreme Mixed Master Level 🔥🔥🔥🔥🔥)

341. The maximum number of electrons that can have n = 5 and l = 3 is:

A) 10
B) 14
C) 18
D) 7
👉 Answer: B
(l = 3 → f-subshell → 7 orbitals × 2 electrons = 14)

342. Which of the following has highest melting point?
A) NaCl
B) MgO
C) KBr
D) CaCl₂
👉 Answer: B

343. The number of π-bonds in phenanthrene is:
A) 6
B) 7
C) 8
D) 9
👉 Answer: B

344. The pH of 1×10⁻⁸ M HCl solution is approximately:
A) 8
B) 7
C) 6
D) 5
👉 Answer: B
(Due to contribution from water)

345. Which of the following carbocations is most stable?
A) Allyl cation
B) Benzyl cation
C) Tertiary carbocation
D) Secondary carbocation
👉 Answer: B

346. The bond order of NO⁺ is:
A) 2
B) 2.5
C) 3
D) 1
👉 Answer: C

347. The number of unpaired electrons in Co²⁺ (high spin, d⁷) is:
A) 1
B) 2
C) 3
D) 4
👉 Answer: C

348. For a first-order reaction, if 87.5% of reactant reacts, number of half-lives passed is:
A) 2
B) 3
C) 4
D) 5
👉 Answer: B
(87.5% = 1 – 1/8 → 3 half-lives)

349. Which compound is strongest acid?
A) p-Nitrophenol
B) Phenol
C) Ethanol
D) Aniline
👉 Answer: A

350. The geometry of ClF₅ is:
A) Octahedral
B) Square pyramidal
C) Trigonal bipyramidal
D) T-shaped

👉 Answer: B

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