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Chemistry NMDCAT MCQs

Ace your medical entry test with Pakistan's premium collection of Chemistry MCQs. Strictly aligned with the latest PMDC syllabus, our platform offers high-yield practice questions for Physical, Inorganic, and Organic Chemistry—complete with detailed conceptual explanations to maximize your score.

305 questions found

Subcategories

📁 Absolute Zero 0 📁 Acidity of Alkynes 0 📁 Adhesive 0 📁 ALCOHOLS AND PHENOLS 0 📁 Alcohols and Phenols (Differentiation) 0 📁 ALDEHYDES & KETONES 0 📁 ALKYL HALIDES 0 📁 Anomalous behavior of Water 0 📁 Application of Dipole Movement 0 📁 Application of VSEPR Theory 0 📁 ATONTIC STRUCTURE 0 📁 Balancing Chemical Reaction 0 📁 Boiling point and Vapor Pressure 0 📁 Bond Energy 0 📁 Boyle's Law 0 📁 Buffer Solution 0 📁 CARBOXYLIC ACIDS 0 📁 Charles's Law 0 📁 CHEMICAL BONDING 0 📁 Chemical Equilibrium 0 📁 Chemical Kinetics 0 📁 Chemical Reactions of Benzenes 0 📁 Chemical Reactions/Reactivity 0 📁 Chemistry MCQS By Iqbal Hussain 0 📁 CHETVI ICAL EQUI LIBIRIUM 0 📁 Classification of Proteins 0 📁 Common Ion Effect 0 📁 Conversion of Carboxylic Acid 0 📁 Crystal lattice 0 📁 Crystalline Solids 0 📁 D- & F Block Elements 0 📁 Definition and Classification of Organic Compound 0 📁 Different Terms Used 0 📁 Dipole Movement 0 📁 Discovery of Proton 0 📁 Dyes 0 📁 Effect of Substituents 0 📁 ELECTROCHEVIISTRY 0 📁 Electronic Configuration 0 📁 Electronic Structure 0 📁 Enthalpy 0 📁 Enzymes as Biocatalyst 0 📁 Evaporation 0 📁 Exothermic and Endothermic Reaction 0 📁 Factors affecting rate of reaction 0 📁 Factors Affecting the Shape of Ionic Crystals 0 📁 Free Radical Mechanism 0 📁 Functional Group 0 📁 FUNDAMENTAL CONCEPTS OF CHEMISTRY 0 📁 FUNDAMENTAL PRICIPLES OF ORGANIC CHEMISTRY 0 📁 Haber’s Process 0 📁 Hess’s Law 0 📁 Hybridization 0 📁 Hydrogen Bonding 0 📁 Ideal Gas Equation 0 📁 Importance of Proteins 0 📁 INDUSTRIAL CHEMISTRY 0 📁 Internal Energies 0 📁 Ionic and Molecular Crystals 0 📁 Isomerism 0 📁 IUPAC System of Alkynes 0 📁 Kinetic Molecular Theory 0 📁 Lattice Energy 0 📁 Law of Thermodynamics 0 📁 Le Chatelier's principle 0 📁 Limiting and Excess Reactants 74 📁 LIQUIDS 0 📁 Macro Molecules 0 📁 Moles and Avogadro's Numbers 150 📁 Moles and Avogadro’s Numbers 120 📁 MOT of Benzene Resonance and Resonance Energy 0 📁 Nomenclature 0 📁 Nomenclature and structure of Aldehydes and Ketones 0 📁 Nomenclature of Alkanes 0 📁 Nomenclature of Alkenes 0 📁 Nomenclature Structure and Reactivity 0 📁 Order of Reaction 0 📁 Oxidation and Reduction 0 📁 P- 0 📁 Planck's Quantum Theory 0 📁 Polymers 0 📁 Preparation 0 📁 Preparation of Alkanes 0 📁 Preparation of Alkynes 0 📁 Properties Of Liquids based on Kinetic Molecular Theory 0 📁 Quantum Number 0 📁 Rate Constant 0 📁 Reaction of Aldehydes and Ketones 0 📁 Reaction of Group I elements 0 📁 Reaction of Group II elements 0 📁 Reaction of Group IV elements 0 📁 Reactions of Alkynes 0 📁 Reactivity of Aldehydes and Ketones 0 📁 Reactivity of Benzene 0 📁 Real and Ideal Gas 0 📁 Redox Reaction 0 📁 S AND P BLOCK ELEMNETS 0 📁 S- 0 📁 s- and p- Block Elements Properties and their Trends 0 📁 Shapes of Alkenes 0 📁 Shapes of orbitals 0 📁 Sigma and Pi Bond 0 📁 SOLIDS 0 📁 Solubility Products 0 📁 Spectrum of Hydrogen 0 📁 Standard Hydrogen Electrode (SHE) 0 📁 Standard Temperature and Pressure (STP) 0 📁 Structure and Preparation of Carboxylic Acid 0 📁 structure and reactivity of Alcohol 0 📁 Structure and Reactivity of Alkenes 0 📁 structure and reactivity of Phenols 0 📁 Substitution vs Addition 0 📁 Substitution vs Elimination 0 📁 THERMOCHEMISTRY & ENERGETICS OF CHEMICAL REACTIONS 0 📁 Thermodynamics 0 📁 Unit of "R" 0 📁 Unit of “R” 0 📁 VSEPR Theory 0 📁 Yield 80

Practice Questions

The mass of carbon present in 22 g of carbon dioxide (CO₂) is

A. 12 g
B. 3 g
C. 6 g
D. 8 g

22 g CO₂ = 0.5 mole. One mole of CO₂ contains one mole of carbon atoms. Mass of carbon = 0.5 × 12 = 6 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Moles of O₂ = 9.6 ÷ 32 = 0.3 mole. Required KClO₃ = 0.3 × 2/3 = 0.2 mole. Mass = 0.2 × 122.5 = 24.5 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The volume ratio H₂:Cl₂ is 1:1. Therefore, 11.2 dm³ of hydrogen requires 11.2 dm³ of chlorine.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Number of moles = 6.022 × 10²¹ ÷ 6.022 × 10²³ = 0.01 mole. Atomic mass = 0.64 ÷ 0.01 = 64 g/mol (64 u).

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The number of molecules in 1 dm³ of an ideal gas at STP is approximately

A. 6.022 × 10²³
B. 2.69 × 10²²
C. 1.81 × 10²⁴
D. 3.01 × 10²²

One mole occupies 22.4 dm³. Therefore, molecules in 1 dm³ = (6.022 × 10²³) ÷ 22.4 ≈ 2.69 × 10²².

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

49 g H₂SO₄ = 0.5 mole. NaOH:H₂SO₄ = 2:1. Therefore, NaOH required = 1 mole = 40 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The total number of protons in 9 g of water (H₂O) is

A. 6.022 × 10²³
B. 3.011 × 10²⁴
C. 6.022 × 10²⁴
D. 1.5055 × 10²⁴

9 g H₂O = 0.5 mole. Each molecule contains 10 protons. Total protons = 0.5 × 10 × Nₐ = 3.011 × 10²⁴.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

A gas has a density of 1.964 g/dm³ at STP. The molar mass of this gas is approximately

A. 22 g/mol
B. 32 g/mol
C. 44 g/mol
D. 28 g/mol

Molar mass = Density × 22.4 = 1.964 × 22.4 ≈ 44 g/mol.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Fe:H₂ = 3:4. For 3 moles H₂, Fe = 2.25 moles. Mass = 2.25 × 56 = 126 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

143.5 g = 0.5 mole washing soda. Water = 0.5 × 10 = 5 moles.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

32.5 g Zn = 0.5 mole. It gives 0.5 mole H₂. Volume = 0.5 × 22.4 = 11.2 dm³.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

2 moles C₂H₆ require 7 moles O₂. Mass = 7 × 32 = 224 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

0.5 × 6 = 3 moles of oxygen atoms. Therefore, the oxygen subscript is 6.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Moles of O₂ = 16 ÷ 32 = 0.5 mole. By Avogadro's law, equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. Therefore, the same volume of CO₂ also contains 0.5 mole.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Mole ratio S:H₂S = 3:2. Moles of S = 0.5 × 3/2 = 0.75 mole. Mass = 0.75 × 32 = 24 g.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The total number of electrons in 1.7 g of ammonia gas (NH₃) is (Atomic numbers: N = 7, H = 1)

A. 6.022 × 10²³
B. 3.011 × 10²³
C. 6.022 × 10²⁴
D. 3.011 × 10²⁴

1.7 g NH₃ = 0.1 mole. Each NH₃ molecule has 10 electrons. Therefore, total electrons = 0.1 × 10 × Nₐ = 6.022 × 10²³.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The mole ratio of O₂ to CH₄ is 2:1. For 2.5 moles CH₄, moles of O₂ = 2.5 × 2 = 5.0 moles. At STP, 1 mole of gas occupies 22.4 dm³, so volume = 5.0 × 22.4 = 112.0 dm³.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

Moles of O₂ = 64 g ÷ 32 g/mol = 2.0 moles. At STP, molar volume is 22.4 dm³. Therefore, volume = 2.0 × 22.4 = 44.8 dm³.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026

The number of representative particles (molecules) present in 88 g of carbon dioxide (CO₂) is (Molar mass of CO₂ = 44 g/mol)

A. 6.022 × 10²³
B. 1.2044 × 10²⁴
C. 3.011 × 10²³
D. 2.4088 × 10²⁴

Moles of CO₂ = 88 ÷ 44 = 2.0 moles. Molecules = 2.0 × 6.022 × 10²³ = 1.2044 × 10²⁴.

nmdcat.online Chemistry NMDCAT MCQs
Jul 2, 2026
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