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–38)

 Here are 🔬Chemistry MCQs – Set 38 (Ultimate Infinity Level Challenge 🔥🔥🔥🔥🔥)

371. The number of angular nodes in 7f orbital is:

A) 2
B) 3
C) 4
D) 5
👉 Answer: B
(Angular nodes = l = 3 for f-orbital)

372. Which of the following has maximum electron affinity?
A) F
B) Cl
C) O
D) S
👉 Answer: B

373. The number of σ-bonds in phenanthrene (C₁₄H₁₀) is:
A) 20
B) 21
C) 22
D) 23
👉 Answer: C

374. The pH of 1×10⁻⁶ M HCl solution is approximately:
A) 6
B) 5.5
C) 5
D) 4
👉 Answer: A
(Slightly less than 6 due to water contribution)

375. Which radical is most stable?
A) Vinyl
B) Allyl
C) Primary
D) Secondary

👉 Answer: B

376. The bond order of O₂²⁻ is:
A) 1
B) 1.5
C) 2
D) 2.5

👉 Answer: A

377. The number of unpaired electrons in Mn³⁺ (high spin, d⁴) is:
A) 2
B) 3
C) 4
D) 1

👉 Answer: C

378. For a second-order reaction, if concentration doubles, rate becomes:
A) Double
B) Half
C) Four times
D) Eight times

👉 Answer: C

379. Which compound gives positive iodoform test?
A) Isopropanol
B) Methanol
C) Formaldehyde
D) Benzaldehyde

👉 Answer: A

380. The geometry of PCl₅ in solid state is:
A) Trigonal bipyramidal
B) Tetrahedral
C) Octahedral
D) Ionic (tetrahedral + octahedral ions)

👉 Answer: D

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