Gce Model Questions Vol1 2017 Chemistry Question 50

Practice objective / multiple choice question 50 from the 2017 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Hard Difficulty
Question 50 GCE_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

Two colourless liquids, A and B, both have the molecular formula C₄H₁₀O. The following observations are made:\n(i) When each is added to Lucas reagent (conc. HCl/ZnCl₂) at 25 °C, liquid A becomes cloudy within 5 s, whereas liquid B shows no change after 2 min.\n(ii) Each liquid is separately oxidised with pyridinium chlorochromate (PCC). The oxidation product from A boils at 80 °C, while that from B boils at 78 °C. Identify liquids A and B and write their structures.

Answer Options

A. A = 1‑butanol (CH₃CH₂CH₂CH₂OH); B = 2‑butanol (CH₃CH(OH)CH₂CH₃)
Correct Answer B. A = 2‑butanol (CH₃CH(OH)CH₂CH₃); B = 1‑butanol (CH₃CH₂CH₂CH₂OH)
C. A = 2‑methyl‑1‑propanol ((CH₃)₂CHCH₂OH); B = 1‑butanol (CH₃CH₂CH₂CH₂OH)
D. A = 2‑butanol (CH₃CH(OH)CH₂CH₃); B = 2‑methyl‑2‑propanol ((CH₃)₃COH)
Correct Answer
B
Correct Option:
A = 2‑butanol (CH₃CH(OH)CH₂CH₃); B = 1‑butanol (CH₃CH₂CH₂CH₂OH)

About This Question

This is Gce Model Questions Vol1 2017 Chemistry Question 50. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

View More Gce Model Questions Vol1 2017 Chemistry Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support