Chemistry MCQs

Our Chemistry MCQs section is tailored for students and job seekers aiming for excellence in academic and competitive exams. It includes a vast selection of multiple-choice questions covering organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, and biochemistry. These MCQs are suitable for FSc, BSc, pre-medical, and pre-engineering students, as well as CSS, PMS, NTS, and other competitive exams in Pakistan. Designed by subject experts, the questions help reinforce key concepts, test analytical skills, and improve speed and accuracy. Each topic includes beginner to advanced-level questions with a focus on the latest syllabus and past papers. If you are preparing for university entry tests or government job recruitment exams, this resource offers an excellent opportunity to master chemistry topics effectively.

Q: The main ore of aluminum is?
A) Magnetite
B) Galena
C) Bauxite
D) Hematite
Q: Which element forms the basis of life?
A) Carbon
B) Hydrogen
C) Nitrogen
D) Oxygen
Q: The number of valence electrons in oxygen is?
A) 6
B) 2
C) 4
D) 8
Q: An example of a polyatomic ion is?
A) Na⁺
B) OH⁻
C) Cl⁻
D) K⁺
Q: Which compound has a triple bond?
A) Ethene
B) Ethyne
C) Propane
D) Ethane
Q: Which of the following is a diatomic molecule?
A) Carbon
B) Sodium
C) Nitrogen
D) Neon
Q: The law of conservation of mass was proposed by?
A) Newton
B) Mendeleev
C) Lavoisier
D) Dalton
Q: Which gas turns limewater milky?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
Q: Which type of reaction is burning of wood?
A) Decomposition
B) Combustion
C) Substitution
D) Combination