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–39)

 Here are 🔬Chemistry MCQs – Set 39 (Absolute Final Supreme Level 🔥🔥🔥🔥🔥)

381. The number of radial nodes in 7d orbital is:

A) 3
B) 4
C) 5
D) 6
👉 Answer: B
(Radial nodes = n – l – 1 = 7 – 2 – 1 = 4)

382. Which of the following has highest first ionization enthalpy?
A) O
B) N
C) F
D) Ne
👉 Answer: D

383. The number of π-electrons in anthracene is:
A) 12
B) 14
C) 16
D) 10
👉 Answer: B
(Anthracene follows Hückel rule: 14 π-electrons)

384. The pH of 1×10⁻⁷ M HCl solution is approximately:
A) 7
B) 6
C) 5
D) 4
👉 Answer: A
(Due to water contribution, slightly less than 7 but ≈7)

385. Which carbocation is most stable?
A) Vinyl
B) Primary
C) Secondary
D) Benzyl

👉 Answer: D

386. The bond order of O₂⁻ is:
A) 1
B) 1.5
C) 2
D) 2.5

👉 Answer: B

387. The number of unpaired electrons in Fe³⁺ (low spin, d⁵) is:
A) 0
B) 1
C) 2
D) 3

👉 Answer: B

388. For a zero-order reaction, if initial concentration is doubled, half-life becomes:
A) Half
B) Double
C) Same
D) Four times

👉 Answer: B

389. Which compound is strongest acid?
A) CF₃COOH
B) CCl₃COOH
C) CHCl₂COOH
D) CH₃COOH

👉 Answer: A

390. The geometry of IF₇ is:
A) Octahedral
B) Pentagonal bipyramidal
C) Square pyramidal
D) Tetrahedral

👉 Answer: B

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