🧱 KPSC JE Civil – Solved Questions (Part 3: Q41–Q60)

This part contains questions 41 to 60 with correct answers and explanations for all options.

📘 Q41. Main constituents of Portland cement?

• (1) Lime, silica, alumina & iron oxide – Correct. These are the raw materials.
• (2) Lime only – Incomplete.
• (3) Fly ash and gypsum – Used in PPC but not main constituents.
• (4) Clay only – Incorrect.

📘 Q42. Quick setting cement contains higher percentage of?

• (1) Gypsum – Gypsum slows setting.
• (2) Alumina – Correct. Higher alumina accelerates setting.
• (3) Silica – Slows reaction.
• (4) Iron oxide – Minor effect.

📘 Q43. Most accurate method of leveling?

• (1) Barometric leveling – Least accurate.
• (2) Plane table leveling – Not used for levels.
• (3) Dumpy level – Correct. Standard precision instrument.
• (4) GPS leveling – Not as accurate for small elevations.

📘 Q44. The ratio of lateral strain to longitudinal strain?

• (1) Modulus of rigidity – Shear modulus.
• (2) Young’s modulus – Stress/strain.
• (3) Poisson’s ratio – Correct.
• (4) Bulk modulus – Volumetric elasticity.

📘 Q45. Unit of kinematic viscosity?

• (1) m²/s – Correct. (ν = μ/ρ)
• (2) kg/m³ – Density.
• (3) N/m² – Pressure.
• (4) m/s – Velocity.

📘 Q46. Maximum water content in shrinkage limit test?

• (1) When water content does not reduce further volume – Correct.
• (2) At liquid limit – Too high.
• (3) At plastic limit – Not shrinkage.
• (4) At shrinkage value = 0 – Invalid.

📘 Q47. Permanent deformation due to repeated loads?

• (1) Elastic strain – Recoverable.
• (2) Plastic strain – Correct.
• (3) Creep – Time-dependent under constant load.
• (4) Fatigue – Failure by repeated loading.

📘 Q48. The shape of stress–strain curve for mild steel?

• (1) Linear till rupture – Only elastic materials.
• (2) Rigid perfectly plastic – Not mild steel.
• (3) Elastic–plastic with yield plateau – Correct.
• (4) Perfectly elastic – Incorrect.

📘 Q49. Soil with high compressibility?

• (1) Sand – Low compressibility.
• (2) Gravel – Very low.
• (3) Clay – Correct. High compressibility.
• (4) Rock – Negligible.

📘 Q50. Least count of a Vernier caliper?

• (1) 0.01 mm – Correct. Standard least count.
• (2) 0.1 mm – Too large.
• (3) 1 mm – Least accurate.
• (4) 0.001 mm – Micrometer level.

📘 Q51. In a simply supported beam, maximum bending moment occurs at

• (1) Supports – Zero at supports.
• (2) Midspan – Correct.
• (3) Ends – Incorrect.
• (4) None – No.

📘 Q52. Detention period in sedimentation tank?

• (1) 1–2 hours – Correct.
• (2) 8–10 hours – Too high.
• (3) 24 hours – For storage tanks.
• (4) 0.5 hour – Too low.

📘 Q53. Safe bearing capacity depends on

• (1) Type of soil – Correct.
• (2) Moisture content – Affects SBC.
• (3) Footing shape – Affects distribution.
• (4) All of the above – Correct Answer.

📘 Q54. Highest frictional resistance in pipe occurs in

• (1) Laminar flow – Least resistance.
• (2) Critical flow – Unstable region.
• (3) Turbulent flow – Correct.
• (4) Uniform flow – Not a friction category.

📘 Q55. For maximum shear stress theory (Tresca), failure occurs when?

• (1) Maximum principal stress exceeds limit – Rankine theory.
• (2) Shear strain energy exceeds limit – Not Tresca.
• (3) Max shear stress reaches shear strength – Correct.
• (4) Bulk modulus decreases – Irrelevant.

📘 Q56. Bulking of sand occurs due to?

• (1) Moisture coating on grains – Correct.
• (2) Organic matter – No.
• (3) Clay content – Irrelevant.
• (4) Temperature – Does not cause bulking.

📘 Q57. A culvert is a structure used for

• (1) Carrying road over river – That is a bridge.
• (2) Carrying water under road – Correct.
• (3) Traffic control – No.
• (4) Drainage basin – Not a structure.

📘 Q58. Traffic rotary is provided to reduce

• (1) Accidents – Yes.
• (2) Conflict points – Correct.
• (3) Congestion – Helps reduce.
• (4) All of the above – Correct Answer.

📘 Q59. Minimum width of a two-lane road as per IRC?

• (1) 7.5 m – Correct.
• (2) 6.0 m – Single lane width.
• (3) 3.75 m – One-lane width.
• (4) 10 m – Not standard.

📘 Q60. Fluid with constant viscosity?

• (1) Newtonian fluid – Correct.
• (2) Non-Newtonian – Variable viscosity.
• (3) Ideal fluid – Zero viscosity.
• (4) Real fluid – Has viscosity but not constant.

✔ Part 4 (Q61–Q80) available on request.