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. Chemical Bonding
MDCAT
Chemistry
2006

Chemistry · Chemical Bonding

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

Which one is non-polar but contains polar bonds:

Options
  • A

    HCl

  • B

    HF

  • C

    H2O

  • D

    CO2

Explanation

CO2 is the correct answer because even though it contains polar bonds between C and O, its linear molecular geometry results in the dipoles cancelling out, making the molecule non-polar overall. HCl, HF, and H2O are polar molecules with polar bonds due to the electronegativity differences between the atoms.

HCl is polar and contains a polar bond due to the electronegativity difference between H and Cl.

HF is polar and contains a polar bond due to the electronegativity difference between H and F.

H2O is polar and contains polar bonds due to the electronegativity difference between H and O.

CO2 contains polar bonds as O is more electronegative than C, leading to unequal sharing of electrons. However, its symmetry cancels out the dipoles, making the molecule non-polar.

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 · Chemical Bonding · 2006