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: Which of these is a noble gas?
A) Nitrogen
B) Chlorine
C) Oxygen
D) Neon
✅ Correct Answer: D
Explanation: Neon is a noble gas found in Group 18 of the periodic table.
Q: Rusting of iron is an example of which process?
A) Neutralization
B) Sublimation
C) Oxidation
D) Reduction
✅ Correct Answer: C
Explanation: Rusting involves the oxidation of iron in the presence of water and oxygen.
Q: The pH value of lemon juice is approximately?
A) 9
B) 5
C) 7
D) 2
✅ Correct Answer: D
Explanation: Lemon juice is highly acidic, with a pH around 2.
Q: Element with atomic number 6 is?
A) Helium
B) Nitrogen
C) Oxygen
D) Carbon
✅ Correct Answer: D
Explanation: Carbon has an atomic number of 6 and forms the basis of organic chemistry.
Q: Covalent bonds are formed by?
A) Sharing of electrons
B) Loss of neutrons
C) Gaining protons
D) Transfer of electrons
✅ Correct Answer: A
Explanation: Covalent bonds involve the sharing of electrons between atoms.