Chemistry Carboxylic Acids MDCAT 2017
PMDC Verified Question 72 of 94
Compounds having \( -\text{C}\equiv\text{N} \) group are called:
A
Cyano compounds
B
Nitro compounds
C
Carbon nitrogen molecules
D
Nitriles
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Nitriles
Concept:

Organic compounds containing a cyano group (\( -\text{C}\equiv\text{N} \)) attached to an alkyl or aryl group are classified officially under IUPAC nomenclature as nitriles.

Formula:

$$ \text{R-C}\equiv\text{N} $$

Solution:

  • The functional group is termed a cyano group, but the entire class of organic molecules containing it as the principal functional group is officially named nitriles.


  • For example, \( \text{CH}_3\text{CN} \) is called ethanenitrile (or commonly methyl cyanide).


Why other options are incorrect:

While "cyano compounds" is a descriptive term, "nitriles" is the accepted organic family name. Nitro compounds contain the \( -\text{NO}_2 \) group.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Carboxylic Acids MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App