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 formula for methane is?
A) CH₄
B) C₂H₄
C) C₂H₆
D) CO₂
✅ Correct Answer: A
Explanation: Methane is CH₄, the simplest alkane and a major greenhouse gas.
Q: Which element is used in thermometers?
A) Zinc
B) Lead
C) Silver
D) Mercury
✅ Correct Answer: D
Explanation: Mercury remains liquid at room temperature and expands evenly.
Q: Which acid is found in vinegar?
A) Sulfuric acid
B) Nitric acid
C) Acetic acid
D) Citric acid
✅ Correct Answer: C
Explanation: Acetic acid gives vinegar its sour taste and smell.
Q: Metalloids have properties of?
A) Both metals and non-metals
B) Metals only
C) Gases only
D) Non-metals only
✅ Correct Answer: A
Explanation: Metalloids exhibit mixed properties of both groups.
Q: Which of the following is a base?
A) H₂SO₄
B) CH₃COOH
C) HCl
D) NaOH
✅ Correct Answer: D
Explanation: Sodium hydroxide is a strong base.