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Chemistry

Practice the latest Chemistry MCQs with answers and explanations to prepare for exams and job tests. Our collection covers key topics such as atomic structure, periodic table, chemical bonding, organic chemistry, inorganic chemistry, physical chemistry, and environmental chemistry. These Chemistry multiple-choice questions are designed for students, competitive exam aspirants, and professionals appearing in NTS, PPSC, FPSC, CSS, PMS, university entry tests, and medical admission tests. Improve your concepts and problem-solving skills with our updated and comprehensive Chemistry MCQs online.

📘 Alcohols Phenols and Ethers MCQs
📘 Aldehydes and Ketones MCQs
📘 Aliphatic Hydrocarbons MCQs
📘 Alkyl Halides MCQs
📘 Aromatic Hydrocarbons MCQs
📘 Atomic Structure MCQs
📘 Basic Concept MCQs
📘 Carboxylic Acids MCQs
📘 Chemical Bonding MCQs
📘 Chemical Equilibrium MCQs
📘 Chemical Kinetics MCQs
📘 Chemistry Diagnostic Test MCQs
📘 Common Chemical Industries MCQs
📘 Electrochemistry MCQs
📘 Environmental Chemistry MCQs
📘 Experimental Techniques MCQs
📘 Gases MCQs
📘 Group 3A and 4A Elements MCQs
📘 Group 5A and 6A Elements MCQs
📘 Liquids and Solids MCQs
📘 Macromolecules MCQs
📘 Organic Chemistry MCQs
📘 Periodic Classification Of Elements MCQs
📘 S-Block Elements MCQs
📘 Solutions MCQs
📘 The Halogens and The Noble Gases MCQs
📘 ThermoChemistry MCQs
📘 Transition Elements MCQs

81. Which has the minimum freezing point?

September 17, 2025 by Admin
A. One Molal NaCI
B. One molal KCI solution
C. One molal CaCI2
D. One molal urea solution
✅ The correct answer is option C.
Categories Chemistry, Solutions MCQs Tags Chemistry MCQs, Solutions MCQs Leave a comment

82. Which of the following is a macronutrient?

September 17, 2025 by Admin
A. Boron
B. Iron
C. Copper
D. Carbon
✅ The correct answer is option D.
Categories Chemistry, Environmental Chemistry MCQs Tags Chemistry MCQs, Environmental Chemistry MCQs Leave a comment

83. Boron is non-metal whereas AI is metal. It is due to

September 17, 2025 by Admin
A. Small size
B. High nuclear charge
C. Both A and B
D. No authorized justification yet
✅ The correct answer is option C.
Categories Chemistry, Group 3A and 4A Elements MCQs Tags Chemistry MCQs, Group 3A and 4A Elements MCQs Leave a comment

84. Which of the following is not a colligative property?

September 17, 2025 by Admin
A. Lowering of vapour pressure
B. Freezing point
C. Osmotic pressure
D. Elevation of polling point
✅ The correct answer is option B.
Categories Chemistry, Solutions MCQs Tags Chemistry MCQs, Solutions MCQs Leave a comment

85. The requirement of macronutrient per acre of the land is

September 17, 2025 by Admin
A. 5 to 200 kg
B. 20-200 kg
C. 200-400 kg
D. 30-400 kg
✅ The correct answer is option A.
Categories Chemistry, Environmental Chemistry MCQs Tags Chemistry MCQs, Environmental Chemistry MCQs Leave a comment

86. Boron in soil has been considered micronutrient for

September 17, 2025 by Admin
A. Soil porosity
B. Proper growth of plants
C. Alkalinity of soil
D. All
✅ The correct answer is option B.
Categories Chemistry, Group 3A and 4A Elements MCQs Tags Chemistry MCQs, Group 3A and 4A Elements MCQs Leave a comment

87. Which of the following substance do not show continuous solubility curve?

September 17, 2025 by Admin
A. KCIO4
B. Na2SO4. 10H2O
C. K2Cr2O7
D. PbCl2
✅ The correct answer is option B.
Categories Chemistry, Solutions MCQs Tags Chemistry MCQs, Solutions MCQs Leave a comment

88. Three elements needed for the healthy growth of plants are

September 17, 2025 by Admin
A. N P K
B. N K C
C. N S P
D. N Ca P
✅ The correct answer is option A.
Categories Chemistry, Environmental Chemistry MCQs Tags Chemistry MCQs, Environmental Chemistry MCQs Leave a comment

89. One of the outstanding features of boron is its ability to form

September 17, 2025 by Admin
A. Molecular addition compounds
B. Molecular crystals
C. Semiconductors
D. Ionic compounds
✅ The correct answer is option A.
Categories Chemistry, Group 3A and 4A Elements MCQs Tags Chemistry MCQs, Group 3A and 4A Elements MCQs Leave a comment

90. When common salt is dissolved in water?

September 17, 2025 by Admin
A. The boiling point of water decreases
B. The boiling point of water increase
C. The boiling point of water remains the same
D. None of the above
✅ The correct answer is option B.
Categories Chemistry, Solutions MCQs Tags Chemistry MCQs, Solutions MCQs Leave a comment
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