Chemistry MCQs (Set–41)
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Here are 🔬 Chemistry MCQs – Set 41 (Mega Grand Master Level 🔥🔥🔥🔥🔥)
401. The number of orbitals in n = 6 shell is:
A) 18
B) 24
C) 36
D) 72
👉 Answer: C
(Total orbitals = n² = 6² = 36)
402. Which of the following has highest electron gain enthalpy?
A) Cl
B) F
C) Br
D) I
👉 Answer: A
403. The number of π-bonds in benzene is:
A) 2
B) 3
C) 4
D) 6
👉 Answer: B
404. The pH of 0.00001 M NaOH solution is:
A) 9
B) 8
C) 7
D) 6
👉 Answer: A
405. Which carbocation is most stable?
A) Methyl
B) Primary
C) Allyl
D) Secondary
👉 Answer: C
406. The bond order of O₂ molecule is:
A) 1
B) 1.5
C) 2
D) 2.5
👉 Answer: C
407. The number of unpaired electrons in Ni³⁺ (d⁷, low spin) is:
A) 0
B) 1
C) 2
D) 3
👉 Answer: B
408. For a first-order reaction, 87.5% completion corresponds to:
A) 2 half-lives
B) 3 half-lives
C) 4 half-lives
D) 5 half-lives
👉 Answer: B
409. Which compound is strongest acid?
A) HCOOH
B) CH₃COOH
C) CCl₃COOH
D) Phenol
👉 Answer: C
410. The geometry of BrF₃ is:
A) T-shaped
B) Trigonal planar
C) Square planar
D) Linear
👉 Answer: A
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