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 8

🔬 Chemistry MCQs (Set–8)

71. The de Broglie wavelength of a particle is inversely proportional to its:
A) Velocity
B) Mass
C) Momentum
D) Charge
👉 Answer: C) Momentum

72. Which of the following complexes will show the highest magnetic moment?
A) [Fe(CN)₆]⁴⁻
B) [Fe(H₂O)₆]²⁺
C) [Co(NH₃)₆]³⁺
D) [Ni(CN)₄]²⁻
👉 Answer: B) [Fe(H₂O)₆]²⁺

73. The enthalpy change for formation of 1 mole of a compound from its elements in their standard states is called:
A) Lattice enthalpy
B) Bond enthalpy
C) Standard enthalpy of formation
D) Ionization enthalpy
👉 Answer: C) Standard enthalpy of formation

74. Which of the following species has the highest bond dissociation energy?
A) F₂
B) Cl₂
C) Br₂
D) I₂
👉 Answer: B) Cl₂

75. The number of sigma (σ) and pi (π) bonds in benzene (C₆H₆) respectively are:
A) 6σ, 3π
B) 9σ, 3π
C) 12σ, 3π
D) 12σ, 6π
👉 Answer: C) 12σ, 3π

76. Which of the following obeys Beer-Lambert law?
A) Highly concentrated solution
B) Dilute solution
C) Colloidal solution
D) Suspension
👉 Answer: B) Dilute solution

77. The geometry of SF₆ molecule is:
A) Tetrahedral
B) Trigonal bipyramidal
C) Octahedral
D) Square planar
👉 Answer: C) Octahedral

78. The order of acidic strength is:
A) HF > HCl > HBr > HI
B) HI > HBr > HCl > HF
C) HCl > HF > HBr > HI
D) HBr > HI > HCl > HF
👉 Answer: B) HI > HBr > HCl > HF

79. The rate law for a reaction is r = k[A]²[B]. The overall order of reaction is:
A) 1
B) 2
C) 3
D) 4
👉 Answer: C) 3

80. Which of the following will give a positive Tollen’s test?
A) Ketone
B) Aldehyde
C) Alcohol
D) Ether
👉 Answer: B) Aldehyde

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