🧱 KPSC JE Civil – Solved Questions (Part 4: Q61–Q80)

This part includes questions 61 to 80 with answer and explanation for all options.

📘 Q61. The discharge in an open channel depends on?

• (1) Cross-sectional area – Yes.
• (2) Slope – Yes.
• (3) Roughness – Yes.
• (4) All of the above – Correct. Manning’s equation depends on all.

📘 Q62. In reinforced concrete, steel is provided to resist?

• (1) Tension – Correct. Concrete is weak in tension.
• (2) Compression – Concrete is strong.
• (3) Both – Not primary purpose.
• (4) Shear only – No.

📘 Q63. The main purpose of seasoning timber?

• (1) Reduce moisture content – Correct.
• (2) Increase weight – Opposite happens.
• (3) Reduce strength – No.
• (4) Increase cracking – No, it prevents cracking.

📘 Q64. A slump test measures?

• (1) Workability – Correct.
• (2) Strength – Cube test.
• (3) Setting time – Vicat test.
• (4) Durability – Not slump.

📘 Q65. Flow net is used in?

• (1) Seepage analysis – Correct.
• (2) Elastic analysis – No.
• (3) Traffic flow – No.
• (4) Leveling – No.

📘 Q66. The coefficient of curvature (Cc) is given by?

• (1) D30² / (D10 × D60) – Correct.
• (2) D60 × D10 – Incorrect.
• (3) D10² / D60 – No.
• (4) D30 / D10 – No.

📘 Q67. For highways, the ruling gradient is?

• (1) Steeper than limiting gradient – No.
• (2) Flatter than exceptional gradient – True but not definition.
• (3) Maximum gradient permitted under normal conditions – Correct.
• (4) Used only in hill roads – No.

📘 Q68. Permeability of clay is?

• (1) High – Incorrect.
• (2) Medium – No.
• (3) Very low – Correct.
• (4) Infinite – Impossible.

📘 Q69. Which method is used for locating a point in plane table surveying?

• (1) Radiation – Correct. Used when point is visible.
• (2) Traversing – For route survey.
• (3) Levelling – No.
• (4) Resection – Used to locate instrument, not point.

📘 Q70. The pH value of water indicates?

• (1) Acidity/alkalinity – Correct.
• (2) Hardness – No.
• (3) Turbidity – No.
• (4) Dissolved oxygen – No.

📘 Q71. The load carrying capacity of a column increases with?

• (1) Reduction in length – Correct.
• (2) Increase in slenderness ratio – Reduces capacity.
• (3) Increase in eccentricity – Reduces moment.
• (4) Increase in buckling – Wrong.

📘 Q72. Standard consistency test is performed using?

• (1) Vicat apparatus – Correct.
• (2) Le Chatelier apparatus – Soundness.
• (3) Blain apparatus – Fineness.
• (4) Penetrometer – Not used.

📘 Q73. The minimum no. of readings for reciprocal leveling?

• (1) One – No.
• (2) Two – Correct. One from each side.
• (3) Three – Not required.
• (4) Four – Not necessary.

📘 Q74. Zero air voids line is drawn between?

• (1) Dry density and moisture content – Correct.
• (2) LL and PL – Consistency limits.
• (3) γd and Cc – No relation.
• (4) e and σ – Void ratio chart.

📘 Q75. Standard size of a brick?

• (1) 19 × 9 × 9 cm – Correct (with mortar).
• (2) 23 × 11 × 7 cm – Non-standard.
• (3) 10 × 10 × 10 cm – Cubic.
• (4) 15 × 10 × 10 cm – Wrong.

📘 Q76. A spillway is used for?

• (1) Diverting excess water from reservoir – Correct.
• (2) Stopping water – Dam does that.
• (3) Purifying water – No.
• (4) Irrigation – No.

📘 Q77. The method used to increase bearing capacity?

• (1) Sand drains – Used for consolidation.
• (2) Vibro-compaction – Correct. Densifies soil.
• (3) Dewatering – Reduces moisture.
• (4) Triaxial test – Testing method.

📘 Q78. Grade of concrete used for RCC footings?

• (1) M10 – Not allowed.
• (2) M15 – Lean concrete.
• (3) M20 – Correct. Minimum grade for RCC.
• (4) M5 – Not used.

📘 Q79. Water absorption for good quality bricks?

• (1) Less than 20% – Correct.
• (2) More than 35% – Poor quality.
• (3) 50% – Very poor.
• (4) 100% – Impossible.

📘 Q80. A cantilever beam carries maximum shear at?

• (1) Free end – Zero at free end.
• (2) Fixed end – Correct.
• (3) Midpoint – No.
• (4) None of the above – Incorrect.

✔ Part 5 (Q81–Q100) available on request.