ECAT Chemistry MCQs by Chapter: Organic, Inorganic & Physical Chemistry

Chapter-wise ECAT Chemistry practice — Organic, Inorganic and Physical Chemistry — with sample MCQs for each, matching the same split HighYield already uses for ECAT Math and Physics.

ECAT Chemistry draws heavily from three areas: Organic Chemistry, Inorganic Chemistry and Physical Chemistry. Rather than one flat "ECAT Chemistry MCQs" post, here's a chapter-by-chapter sample so you can target your revision precisely — the same split we use for ECAT Mathematics and ECAT Physics.

Chapter: Organic Chemistry

1. The general formula for alkanes is:

A) CnH2n
B) CnH2n+2 ✅
C) CnH2n-2
D) CnHn

2. The functional group present in alcohols is:

A) -COOH
B) -CHO
C) -OH ✅
D) -NH2

3. The IUPAC name of acetylene is:

A) Ethene
B) Ethyne ✅
C) Ethane
D) Methyne

Chapter: Inorganic Chemistry

4. The element with atomic number 1 is:

A) Helium
B) Hydrogen ✅
C) Lithium
D) Oxygen

5. The most electronegative element on the periodic table is:

A) Oxygen
B) Chlorine
C) Fluorine ✅
D) Nitrogen

6. Noble gases belong to which group of the modern periodic table?

A) Group 1
B) Group 17
C) Group 18 ✅
D) Group 14

Chapter: Physical Chemistry

7. The SI unit for the amount of substance is the:

A) Gram
B) Litre
C) Mole ✅
D) Joule

8. A neutral aqueous solution at 25°C has a pH of:

A) 0
B) 7 ✅
C) 14
D) 1

9. Avogadro's number is approximately:

A) 6.022 × 10²³ ✅
B) 3.14 × 10²³
C) 9.8 × 10²³
D) 1.6 × 10⁻¹⁹

Why This Split Matches the Real Paper

ECAT Chemistry is the largest single subject in HighYield's ECAT question bank — larger than Physics or Mathematics — and Organic, Inorganic and Physical Chemistry are where the FSc Pre-Engineering syllabus concentrates most of its content, so fluency across all three matters more than breadth across every minor sub-topic.

HighYield's ECAT question bank covers Mathematics, Physics, Chemistry and English, every question explained. For the full syllabus and preparation books breakdown, see our ECAT Past Papers, Syllabus & Preparation Books guide. Try the first 20 questions of the full bank free, no sign-in required, from the UET ECAT question bank page.