Chemistry MCQs
Chemistry MCQs cover organic, inorganic, physical, analytical, and biochemistry topics. Perfect for FSc, BSc, CSS, PMS, NTS, and competitive exams, they enhance concept mastery, analytical skills, speed, and accuracy for academic and job test success.
Q: The gas used in the Haber process is:
A) Oxygen
B) Ammonia
C) Hydrogen
D) Methane
✅ Correct Answer: C
Explanation: Hydrogen reacts with nitrogen to produce ammonia.
Q: The periodic table was developed by:
A) Newton
B) Curie
C) Einstein
D) Mendeleev
✅ Correct Answer: D
Explanation: Dmitri Mendeleev arranged elements by atomic mass, predicting new ones.
Q: When two atoms share a pair of electrons, the bond formed is:
A) Hydrogen
B) Ionic
C) Covalent
D) Metallic
✅ Correct Answer: C
Explanation: Shared electron pairs form covalent bonds.
Q: Atomic mass is measured in:
A) Atomic mass units
B) Moles
C) Joules
D) Grams
✅ Correct Answer: A
Explanation: The atomic mass unit (amu) standardizes atomic weights.
Q: Boiling point of water at sea level is:
A) 100°C
B) 125°C
C) 75°C
D) 50°C
✅ Correct Answer: A
Explanation: Water boils at 100°C under standard atmospheric pressure.