Daily Practice Problems

Class 12 · Chemistry

Ch 5 — Coordination Compounds

📅 4 August 2026 ✎ 5 Questions ⏰ 10 minutes

Assertion (A): EDTA is a hexadentate ligand.
Reason (R): EDTA can donate electron pairs through six donor atoms to a metal ion.

Choose the correct option:

A. Both A and R are true, and R is the correct explanation of A B. Both A and R are true, but R is NOT the correct explanation of A C. A is true, but R is false D. A is false, but R is true

📝 SolutionEDTA has six donor atoms (two nitrogen and four oxygen) that can all bond to a metal, making it hexadentate. R correctly explains A.

The Werner theory of coordination compounds introduced the concept of:

A. primary and secondary valencies B. atomic mass C. molecularity D. isotopes

📝 SolutionWerner proposed primary valency (oxidation state) and secondary valency (coordination number) to explain the structure of coordination compounds.

In naming coordination compounds, ligands are named:

A. after the metal B. before the metal C. not at all D. randomly

📝 SolutionIn IUPAC nomenclature, the ligands are named first (in alphabetical order), followed by the central metal.

Which of these is a neutral ligand?

A. Cl⁻ B. $H_2O$ C. CN⁻ D. OH⁻

📝 SolutionWater ($H_2O$) is a neutral molecule acting as a ligand (aqua). The others are anionic ligands.

Coordination compounds are important in biology; for example, haemoglobin contains the metal:

A. magnesium B. iron C. zinc D. copper

📝 SolutionHaemoglobin is a coordination complex of iron, which binds oxygen for transport in blood. (Chlorophyll contains magnesium.)

← Previous DPP (3 August 2026) Next DPP (5 August 2026) →

📚 View All DPPs (Archive)

🔔 Don't miss tomorrow's DPP!

Get a new DPP every morning, straight to WhatsApp — free.

📱 Get DPP on WhatsApp

Class 12 · Chemistry

Fully prepared for the board exam?

Check out Alpha Classes' Exam Kits — notes, PYQs, mock tests and much more.

View Exam Kits →