🧱 KPSC JE Civil – Solved Questions (Part 14: Q261–Q280)

This section includes questions 261 to 280 with complete explanations for all options.

📘 Q261. Maximum permissible silt content in sand?

• (1) 3% – Correct (for good quality concrete).
• (2) 8% – Too high.
• (3) 10% – For mortar, not concrete.
• (4) 15% – Unacceptable.

📘 Q262. The earth pressure at rest is?

• (1) Larger than active pressure – Correct.
• (2) Equal to active pressure – No.
• (3) Less than active – No.
• (4) Zero – Never.

📘 Q263. The process of estimating crop water requirement?

• (1) Consumptive use – Correct.
• (2) Precipitation – Rainfall.
• (3) Transpiration – Part of CU.
• (4) Runoff – Not water need.

📘 Q264. The characteristic of laminar flow?

• (1) Re < 2000 – Correct.
• (2) Re > 4000 – Turbulent.
• (3) Re = 1,00,000 – No.
• (4) Velocity fluctuates – Turbulent.

📘 Q265. Which cement is suitable for massive concreting?

• (1) Low heat cement – Correct.
• (2) Quick-setting cement – Heats fast.
• (3) Rapid hardening cement – High heat.
• (4) White cement – Not for mass concreting.

📘 Q266. Most economical irrigation method?

• (1) Drip irrigation – Correct.
• (2) Flood irrigation – Low efficiency.
• (3) Sprinkler – Moderate.
• (4) Furrow – Not most efficient.

📘 Q267. Standard height of handrails in buildings?

• (1) 900 mm – Correct.
• (2) 500 mm – Very low.
• (3) 1500 mm – Too high.
• (4) 300 mm – No.

📘 Q268. The hydrological cycle includes?

• (1) Precipitation – Yes.
• (2) Evaporation – Yes.
• (3) Runoff – Yes.
• (4) All of the above – Correct.

📘 Q269. Angle of internal friction is maximum for?

• (1) Gravel – Correct.
• (2) Clay – Least friction.
• (3) Silt – Medium.
• (4) Peat – Very low.

📘 Q270. The effect of water reducing admixture?

• (1) Increase workability – Correct.
• (2) Reduce setting time – Depends on type.
• (3) Reduce strength – No.
• (4) Increase shrinkage – No.

📘 Q271. Escape velocity of water from tank outlet?

• (1) √(2gh) – Correct (Torricelli’s theorem).
• (2) 2gh – No.
• (3) gh – No.
• (4) g/h – No.

📘 Q272. Best suited foundation for black cotton soil?

• (1) Under-reamed pile – Correct.
• (2) Raft foundation – Not ideal.
• (3) Isolated footing – Dangerous.
• (4) Rubble masonry – No.

📘 Q273. The type of glass used for safety?

• (1) Toughened glass – Correct.
• (2) Float glass – Normal.
• (3) Wired glass – Fire-resistant, but not strongest.
• (4) Sheet glass – Weak.

📘 Q274. A structure that carries water under a road?

• (1) Culvert – Correct.
• (2) Bridge – Road over river.
• (3) Aqueduct – Canal over drainage.
• (4) Dam – No.

📘 Q275. The value of Poisson’s ratio for steel?

• (1) 0.25 – Low.
• (2) 0.3 – Correct.
• (3) 0.5 – Incompressible material.
• (4) 0.1 – No.

📘 Q276. The main function of filter in a dam?

• (1) Prevent migration of fines – Correct.
• (2) Increase seepage – No.
• (3) Reduce weight – No.
• (4) Increase uplift – Opposite.

📘 Q277. In surveying, R.L. stands for?

• (1) Reduced level – Correct.
• (2) Relative line – No.
• (3) Reference load – No.
• (4) Record level – No.

📘 Q278. The most suitable soil for road embankment?

• (1) Sand–gravel mix – Correct.
• (2) Clay – Weak when wet.
• (3) Silt – Low stability.
• (4) Peat – Unstable.

📘 Q279. A water meter measures?

• (1) Quantity of water used – Correct.
• (2) Pressure – Pressure gauge.
• (3) Velocity – Flow meter.
• (4) Temperature – No.

📘 Q280. Pavement failure due to repeated loads?

• (1) Fatigue cracking – Correct.
• (2) Rutting – Permanent deformation.
• (3) Shoving – Plastic movement.
• (4) Raveling – Surface wear.

✔ Part 15 (Q281–Q300) ready on request.