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100+ Free CAAS SAR-66 Module 2 Physics Practice Questions
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2026 Statistics
Key Facts: CAAS SAR-66 Module 2 Physics Exam
52 Qs
Multiple-choice questions per exam sitting.
CAAS AC 66-13 Appendix 1
65 Mins
Time duration allowed for Module 2.
CAAS AC 66-13 Appendix 1
75%
Minimum pass mark required by CAAS SAR-66.
CAAS SAR-66.25
S$87.20
Exam fee per basic knowledge subject (from 1 Jan 2026).
Air Navigation Order Twelfth Schedule
5 Syllabus Areas
Matter, Mechanics, Thermodynamics, Optics, Wave Motion & Sound.
CAAS SAR-66 Appendix 1 Syllabus
CAAS SAR-66 Module 2 Physics is a 65-minute, 52-question multiple-choice examination administered by CAAS requiring a 75% pass mark for Category B1 and B2 Aircraft Maintenance Engineer licensing in Singapore.
Sample CAAS SAR-66 Module 2 Physics Practice Questions
Try these sample questions to test your CAAS SAR-66 Module 2 Physics exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which subatomic particle carries a negative electrical charge and orbits the atomic nucleus?
A.Electron
B.Proton
C.Neutron
D.Positron
Explanation: Electrons are negatively charged subatomic particles that orbit the dense, positively charged nucleus of an atom. Protons carry a positive charge and neutrons are electrically neutral, both residing inside the nucleus.
2What is the smallest unit of a chemical compound that retains all of its chemical properties?
A.Molecule
B.Atom
C.Ion
D.Electron
Explanation: A molecule is the smallest particle of a compound that maintains the chemical characteristics and composition of that substance. An atom is the smallest unit of an element, while ions are charged atoms or groups of atoms.
3What term describes the direct phase transition of a solid substance into a gas without passing through the liquid state?
A.Sublimation
B.Condensation
C.Vaporization
D.Deposition
Explanation: Sublimation is the thermodynamic process where a solid changes directly into a gas without melting into a liquid first, such as dry ice (solid carbon dioxide) or ice under specific low-pressure conditions. Condensation is gas-to-liquid, vaporization is liquid-to-gas, and deposition is gas-to-solid.
4In fluid mechanics, what is the key difference between cohesive forces and adhesive forces?
A.Cohesion is the attraction between like molecules, whereas adhesion is the attraction between unlike molecules.
B.Cohesion occurs only in gases, whereas adhesion occurs only in liquids.
C.Adhesion is the attraction between like molecules, whereas cohesion is the attraction between liquid and solid surfaces.
D.Cohesion creates capillary depression, whereas adhesion eliminates surface tension.
Explanation: Cohesion is the intermolecular force of attraction between identical molecules (such as water molecules attracting each other). Adhesion is the attractive force between dissimilar molecules (such as water molecules sticking to a glass tube).
5Why does liquid mercury form a concave-downward (convex) meniscus when placed in a glass tube?
A.Cohesive forces between mercury atoms are stronger than adhesive forces between mercury and glass.
B.Adhesive forces between mercury and glass are stronger than cohesive forces within mercury.
C.Mercury has zero surface tension at room temperature.
D.Mercury reacts chemically with glass to form a positive pressure gradient.
Explanation: Mercury exhibits strong cohesive forces between its atoms compared to the weaker adhesive forces between mercury and glass. Consequently, mercury pulls inward away from the glass walls, resulting in a convex meniscus and capillary depression.
6According to kinetic molecular theory, what happens to the average kinetic energy of gas molecules when the gas temperature is increased?
A.Average kinetic energy increases in direct proportion to absolute temperature (Kelvin).
B.Average kinetic energy remains constant while molecular mass increases.
C.Average kinetic energy decreases because molecular collisions become inelastic.
D.Average kinetic energy quadruples when temperature doubles on the Celsius scale.
Explanation: Kinetic theory states that the absolute temperature (T in Kelvin) of an ideal gas is directly proportional to the average translational kinetic energy of its molecules (Ek = 1.5 * kB * T). Heating the gas increases molecular speed and kinetic energy.
7What type of chemical bonding gives metals like aluminum and titanium their characteristic high electrical conductivity and ductility?
A.Metallic bonding with a sea of delocalized valence electrons
B.Covalent bonding with shared electron pairs between specific atoms
C.Ionic bonding through complete transfer of electrons between ions
D.Van der Waals bonding via weak instantaneous dipoles
Explanation: Metallic bonding consists of a lattice of positive metal ions surrounded by a mobile 'sea' of delocalized valence electrons. Free movement of these electrons allows metals to conduct electricity efficiently and deform plastically (ductility).
8An aircraft structural fitting made of aluminum alloy has a mass of 5.4 kg and a volume of 0.002 m³. What is the mass density of the fitting?
A.2,700 kg/m³
B.1,350 kg/m³
C.10.8 kg/m³
D.0.00037 kg/m³
Explanation: Density (rho) is calculated using rho = m / V. Dividing mass (5.4 kg) by volume (0.002 m³) yields 2,700 kg/m³, which corresponds to the standard density of aluminum alloys.
9Jet A-1 fuel has a density of 800 kg/m³. Given that water has a density of 1,000 kg/m³, what is the specific gravity (relative density) of Jet A-1 fuel?
A.0.80
B.1.25
C.800.0
D.0.08
Explanation: Specific gravity is a dimensionless ratio of the density of a substance to the density of pure water (SG = rho_substance / rho_water). Dividing 800 kg/m³ by 1,000 kg/m³ gives 0.80.
10How do crystalline solids differ fundamentally from amorphous solids in terms of internal atomic arrangement?
A.Crystalline solids possess a regular, repeating long-range 3D atomic lattice, whereas amorphous solids lack long-range order.
B.Crystalline solids melt over a broad temperature range, whereas amorphous solids have sharp, fixed melting points.
C.Amorphous solids have high electrical conductivity, whereas crystalline solids are always insulators.
D.Crystalline solids contain no chemical bonds between constituent atoms.
Explanation: Crystalline solids (such as aviation metals and ceramics) feature atoms arranged in a highly ordered, repeating 3D crystal lattice. Amorphous solids (such as glass and certain polymers) exhibit random atomic arrangements without long-range lattice order.
About the CAAS SAR-66 Module 2 Physics Practice Questions
Verified exam format metadata for CAAS SAR-66 Basic Knowledge Examination - Module 2 Physics is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.