🧱 KPSC JE Civil – Solved Questions (Part 10: Q181–Q200)

This part contains questions 181 to 200 with complete option-wise explanations.

📘 Q181. The purpose of ballast in railway tracks?

• (1) Provide elasticity & drainage – Correct.
• (2) Provide braking – No.
• (3) Provide electricity – No.
• (4) Increase weight – Not primary purpose.

📘 Q182. The permissible noise level in residential areas (day)?

• (1) 55 dB – Correct.
• (2) 65 dB – Commercial areas.
• (3) 75 dB – Industrial.
• (4) 45 dB – Night time.

📘 Q183. The method used to determine flow in an open channel?

• (1) Manning’s formula – Correct.
• (2) Darcy’s law – Soil flow.
• (3) Hagen-Poiseuille law – Lamina flow in pipes.
• (4) Chezy only – Not the most used.

📘 Q184. The main reinforcing steel used in RCC?

• (1) Fe415 / Fe500 bars – Correct.
• (2) Mild steel – Obsolete.
• (3) Stainless steel – Very costly.
• (4) Aluminum – Not used.

📘 Q185. The efficiency of a weir depends mainly on?

• (1) Shape of crest – Correct.
• (2) Length only – No.
• (3) Height only – No.
• (4) Location only – Not primary.

📘 Q186. The minimum grade of concrete for RCC beams as per IS 456?

• (1) M15 – Not allowed for RCC.
• (2) M20 – Correct.
• (3) M10 – Plain concrete.
• (4) M25 – Can be used but not minimum.

📘 Q187. In chain surveying, well-conditioned triangles have?

• (1) Angles between 30°–120° – Correct.
• (2) Angles below 20° – Poor accuracy.
• (3) All acute angles – Not desirable.
• (4) All obtuse angles – No.

📘 Q188. The air content in compacted concrete (normal)?

• (1) 1–2% – Correct.
• (2) 4–8% – Air-entrained concrete.
• (3) 10% – Too high.
• (4) Zero – Impossible.

📘 Q189. The instrument used to measure humidity?

• (1) Hygrometer – Correct.
• (2) Barometer – Pressure.
• (3) Altimeter – Height.
• (4) Thermometer – Temperature.

📘 Q190. The most economical section for a beam?

• (1) I-section – Correct. Max moment of inertia.
• (2) Rectangular – Less efficient.
• (3) Square – Not economical.
• (4) Circular – Not best for bending.

📘 Q191. The material used for damping vibrations?

• (1) Rubber – Correct.
• (2) Steel – No.
• (3) Concrete – No.
• (4) Wood – Some damping but not best.

📘 Q192. The settlement of a building depends on?

• (1) Soil compressibility – Correct.
• (2) Rainfall – Indirect.
• (3) Temperature – No.
• (4) Wind – No.

📘 Q193. The pH value of potable water?

• (1) 6.5–8.5 – Correct.
• (2) 3–4 – Too acidic.
• (3) 9–12 – Too alkaline.
• (4) 1–2 – Highly acidic.

📘 Q194. Which survey is used for locating property boundaries?

• (1) Cadastral survey – Correct.
• (2) Reconnaissance survey – Preliminary.
• (3) City survey – No.
• (4) Geological survey – Earth materials.

📘 Q195. A fluid is said to be ideal when?

• (1) Zero viscosity – Correct.
• (2) High density – No.
• (3) Compressible – No.
• (4) Non-elastic – No.

📘 Q196. The best type of soil for making bricks?

• (1) Clayey soil – Correct.
• (2) Sandy soil – No cohesion.
• (3) Rocky soil – Not suitable.
• (4) Peaty soil – Organic.

📘 Q197. Camber in roads is provided for?

• (1) Drainage of rainwater – Correct.
• (2) Aesthetics – No.
• (3) Increasing speed – No.
• (4) Increasing visibility – No.

📘 Q198. If the density of soil is less than critical density?

• (1) It will compact under vibration – Correct.
• (2) It will expand – No.
• (3) It will collapse – No.
• (4) It will liquefy – Only during earthquakes.

📘 Q199. The pressure exerted by soil on retaining wall?

• (1) Lateral earth pressure – Correct.
• (2) Bearing pressure – On foundation.
• (3) Uplift pressure – Water.
• (4) Atmospheric pressure – No.

📘 Q200. The main purpose of a siphon spillway?

• (1) Automatic overflow – Correct.
• (2) Manual release – No.
• (3) Storing water – No.
• (4) Stopping flood – No.

✔ Part 11 (Q201–Q220) ready on request.