India · Rajasthan Public Service Commission · civil-service
Objective paper; the paper structure was not captured.
Syllabus dated 11/09/2025. Like every state PSC, it localises: state schemes and traditional structures carry marks. Other state PSCs set their own syllabi.
Official source: https://rpsc.rajasthan.gov.in/Static/Syllabus/BE26F1B0-AF3C-495D-9F28-16D4B9AFB813.pdf
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. How many links does a 20 m metric chain have, and what is the length of one link?
D. 100 links of 0.2 m
A 20 m metric chain has 100 links, so each link is 20/100 = 0.2 m. The 30 m chain has 150 links of 0.2 m, which is where 150 links comes from; Gunter's chain also has 100 links but is 66 ft long. 200 links of 0.1 m describes a tape graduated in decimetres, not a chain.
Surveying & Levelling · Chain and tape surveying, including tape corrections
2. Under the USDA land capability classification, a field on a 10 percent slope that is cultivable but needs terracing and contour farming to control erosion would be placed in:
B. Class III or IV with subclass e
Land capability classes I to IV are cultivable with increasing limitations, and the subclass letter names the limitation: e for erosion. Class I land has few limitations and no subclass; class VIII is not usable for cultivation, grazing or forestry; c is climate and w wetness, neither of which is the stated problem. The exact class (III or IV) depends on local criteria for slope and erodibility.
Soil Science for Engineers · Soil formation and profile
3. As the temperature rises, how do the viscosities of water and of air change?
B. Water's viscosity falls; air's viscosity rises
In liquids viscosity comes mainly from intermolecular cohesion, which weakens as temperature rises. In gases it comes from molecular momentum exchange, which increases with temperature. So the two trends are opposite.
Fluid Mechanics & Open Channel Hydraulics · Properties of fluids
4. Standard agricultural engineering textbooks commonly take the mechanical power an adult worker can sustain over a working day as roughly:
A. 0.075–0.1 kW
About 0.1 hp, i.e. roughly 75 W, is the usual textbook figure for continuous work; planning studies often use about 0.05 kW. 0.75–1 kW is only reachable for a few seconds in a sprint, and 0.3–0.4 kW is closer to a draught animal's output.
Farm Power Sources · Human power and its limits
5. Which operation is classed as primary tillage?
A. Mouldboard ploughing after harvest
Primary tillage is the first, deeper operation that cuts and inverts or shatters the soil, done with mouldboard, disc or chisel ploughs. Harrowing and planking are secondary tillage that refine the seedbed, and inter-row weeding after emergence is inter-cultivation.
Farm Machinery & Equipment I — Tillage, Sowing, Planting, Fertiliser · Objectives and types of tillage
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