Indian Army GD / Technical Recruitment Technical Subjects (Soldier Technical Posts) Syllabus

Technical Subjects (Soldier Technical Posts) syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Technical Subjects (Soldier Technical Posts) in Indian Army GD / Technical Recruitment, not a summary of it.

1. 1

   Physics for Technical Entry

   4 topics

   • Mechanics and Properties of Matter
     • Kinematics and Dynamics
     • Elasticity, Surface Tension and Viscosity
   • Thermodynamics and Waves
     • Laws of Thermodynamics
     • Oscillations and Waves
   • Electrostatics and Current Electricity
     • Electric Charge and Field
     • Ohm's Law and Circuits
   • Modern Physics
     • Atoms, Nuclei and Radioactivity
     • Semiconductor Electronics Basics
2. 2

   Chemistry for Technical Entry

   3 topics

   • Physical Chemistry
     • Mole Concept and Stoichiometry
     • Chemical Bonding
   • Inorganic Chemistry
     • Periodic Table and Periodicity
     • Metals, Non-metals and Metallurgy
   • Organic Chemistry Basics
     • Hydrocarbons
     • Functional Groups and Nomenclature
3. 3

   Mathematics for Technical Entry

   4 topics

   • Algebra and Sets
     • Sets, Relations and Functions
     • Sequences and Series
     • Complex Numbers
   • Calculus
     • Limits and Continuity
     • Differentiation
     • Integration
   • Coordinate Geometry and Trigonometry
     • Straight Lines and Conic Sections
     • Trigonometric Functions and Equations
   • Matrices, Determinants and Probability
     • Matrices and Determinants
     • Probability and Statistics

Technical Subjects (Soldier Technical Posts) flashcards for Indian Army GD / Technical Recruitment

21 of 51 cards from the Technical Subjects (Soldier Technical Posts) deck — real questions with worked answers.

1. State Newton's second law of motion in equation form.

   Force equals rate of change of momentum: F = dp/dt = ma, where m is mass and a is acceleration.

2. What is the SI unit of force and how is it defined?

   The newton (N). One newton is the force that gives a 1 kg mass an acceleration of 1 m/s2 (1 N = 1 kg·m/s2).

3. State Hooke's law.

   Within the elastic limit, stress is directly proportional to strain: stress = E x strain, where E is Young's modulus.

4. Define Young's modulus.

   The ratio of tensile (longitudinal) stress to tensile strain: Y = (F/A)/(ΔL/L). Its SI unit is N/m2 (pascal).

5. State the equation of continuity for fluid flow.

   A1v1 = A2v2 — the product of cross-sectional area and fluid velocity is constant for an incompressible fluid (conservation of mass flow).

6. State Bernoulli's principle.

   For an ideal fluid, P + (1/2)ρv2 + ρgh = constant. Where fluid speed is higher, pressure is lower.

7. What is the formula for the time period of a simple pendulum?

   T = 2π√(L/g), where L is the length and g is acceleration due to gravity. It is independent of mass and amplitude (for small angles).

8. State the universal law of gravitation.

   F = G m1m2 / r2 — every two masses attract with a force proportional to the product of their masses and inversely proportional to the square of the distance. G = 6.67 x 10^-11 N·m2/kg2.

9. Define surface tension and give its SI unit.

   Surface tension is the force per unit length acting along the surface of a liquid (or energy per unit area). SI unit: N/m (or J/m2).

10. State the first law of thermodynamics.

    ΔU = Q − W: the change in internal energy equals heat added to the system minus work done by the system. It is a statement of conservation of energy.

11. State the second law of thermodynamics (Kelvin–Planck statement).

    It is impossible for a heat engine to convert all absorbed heat completely into work; some heat must be rejected to a colder reservoir. Entropy of an isolated system never decreases.

12. What is the efficiency formula for a Carnot engine?

    η = 1 − T_cold/T_hot, where temperatures are in kelvin. It is the maximum possible efficiency between two reservoirs.

13. Name the three modes of heat transfer.

    Conduction (through direct contact), convection (through fluid motion), and radiation (through electromagnetic waves, no medium needed).

14. What is the relationship between wave speed, frequency, and wavelength?

    v = fλ, where v is speed, f is frequency, and λ is wavelength.

15. Differentiate between transverse and longitudinal waves.

    In transverse waves the medium vibrates perpendicular to wave direction (e.g. light, water ripples); in longitudinal waves it vibrates parallel to wave direction (e.g. sound).

16. What is the Doppler effect?

    The apparent change in frequency/pitch of a wave when the source and observer move relative to each other — frequency rises on approach and falls on recession.

17. State Coulomb's law.

    F = k q1q2 / r2, where k = 1/(4πε0) ≈ 9 x 10^9 N·m2/C2. Like charges repel, unlike charges attract.

18. Define electric field intensity and give its unit.

    Electric field intensity is the force per unit positive charge: E = F/q. SI unit: N/C or V/m.

19. State Ohm's law.

    V = IR — the current through a conductor is directly proportional to the voltage across it at constant temperature; R is the resistance.

20. Give the formula for electric power in terms of V, I and R.

    P = VI = I2R = V2/R. SI unit is the watt (W).

21. How does resistance depend on length and cross-sectional area of a wire?

    R = ρL/A — resistance is directly proportional to length L and inversely proportional to cross-sectional area A; ρ is resistivity.

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