mMCQ.

Navigation Menu

Step into mMCQ.

Launch mMCQ. diagnostic

Explore mMCQ.

MDCAT prepFree DiagnosticPricing & SubscribeSign in

Resources

Terms & Conditions

mMCQ.

© 2021 - 2025 mMCQ.All rights reserved.

WhatsApp
  1. Home
  2. MDCAT
  3. Chemistry
  4. Aldehydes and Ketones
MDCAT
Chemistry
2021

Chemistry · Aldehydes and Ketones

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

In the normal nomenclature, the aldehyde group in all aldehydes is given position 1 and its position is not mentioned in the name because __________. 

Options
  • A

    Aldehyde is given priority

  • B

    Aldehyde is parent

  • C

    Aldehyde group is present at the terminal

  • D

    None of these options are correct

Explanation

Aldehyde functional group (RCOH) is given position 1 as it is always present at the end .

E.g H-CO-CH3 is acetaldehye and (HCO) functional group is at the end. 

This option is incorrect. 

Aldehyde functional group (RCOH) is given position 1 as it is always present at the end .

E.g H-CO-CH3 is acetaldehye and (HCO) functional group is at the end.

This option is incorrect. 

Aldehyde functional group (RCOH) is given position 1 as it is always present at the end .

E.g H-CO-CH3 is acetaldehye and (HCO) functional group is at the end.

Aldehyde functional group (RCOH) is given position 1 as it is always present at the end .

E.g H-CO-CH3 is acetaldehye and (HCO) functional group is at the end.  

This option is incorrect. 

Aldehyde functional group (RCOH) is given position 1 as it is always present at the end .

E.g H-CO-CH3 is acetaldehye and (HCO) functional group is at the end.

Keep practising Chemistry

Take the free 2 minutes diagnostic to map weak topics, then unlock full Biology, Chemistry, Physics, English, and Logical Reasoning practice for PKR 15,000/month.

Start free diagnosticExplore MDCAT

Tagged under Chemistry · Aldehydes and Ketones · 2021