Bangladesh · Bangladesh Public Service Commission · civil-service · secondary source
Preliminary 200 marks MCQ, 2 hours, +1 / -0.5; written 900 marks (general cadres) or cadre-specific subjects (technical cadres); viva 100.
Checked against a secondary source (coaching or news site), not the conducting body; re-confirm before relying on it. Taken from Bengali Wikipedia. Selection is now 100% on merit (earlier a 55% quota). The subject split of the 200-mark preliminary is not verified.
Official source: https://bpsc.gov.bd/
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. The botanical name of pigeonpea (red gram) is
A. Cajanus cajan
Pigeonpea is Cajanus cajan. Cicer arietinum is chickpea, Arachis hypogaea is groundnut and Vigna radiata is green gram (mung bean).
Agriculture & Food Systems (bridge) · Major crops: rice, wheat, chickpea, pigeonpea, sugarcane, groundnut, tomato, mango
2. IR8, released by the International Rice Research Institute in 1966, is remembered because it
B. was the semi-dwarf rice that launched the Green Revolution in rice
IR8 was a high-yielding semi-dwarf variety that responded to fertiliser without lodging and spread rapidly across Asia. Hybrid rice was developed in China in the 1970s, and beta-carotene 'golden rice' is a much later transgenic development.
Agriculture & Food Systems (bridge) · Major crops: rice, wheat, chickpea, pigeonpea, sugarcane, groundnut, tomato, mango
3. Long-duration pigeonpea is commonly intercropped with sorghum or pearl millet mainly because
C. pigeonpea grows slowly early on, so the cereal matures before competition peaks
Pigeonpea's slow early growth and long duration leave space and time for a faster cereal, which is harvested before the pigeonpea canopy closes; the deep-rooted legume then uses deeper moisture. Nodulation does not need a companion crop, and shared shallow rooting would increase competition, not reduce it.
Agriculture & Food Systems (bridge) · Major crops: rice, wheat, chickpea, pigeonpea, sugarcane, groundnut, tomato, mango
4. A recommendation calls for 100 kg N and 60 kg P2O5 per hectare. All the phosphorus is applied as DAP (18-46-0) and the rest of the nitrogen as urea (46% N). How much urea is needed?
D. About 166 kg
DAP needed = 60 / 0.46 = 130.4 kg, which supplies 130.4 x 0.18 = 23.5 kg N. Remaining N = 100 - 23.5 = 76.5 kg; urea = 76.5 / 0.46 = 166 kg. 217 kg ignores the nitrogen in DAP; 130 kg is the DAP quantity; 77 kg is the nitrogen still needed, not the urea.
Agriculture & Food Systems (bridge) · Soils and NPK deficiency symptoms
5. A wheat plot given 120 kg N/ha yields 4,800 kg/ha; the unfertilised control yields 3,000 kg/ha. The agronomic efficiency of nitrogen is
D. 15 kg grain per kg N
Agronomic efficiency = (fertilised yield - control yield) / N applied = (4,800 - 3,000) / 120 = 15 kg grain per kg N. 40 is the partial factor productivity (4,800 / 120), which ignores the control; 25 is the control yield per kg N.
Agriculture & Food Systems (bridge) · Soils and NPK deficiency symptoms
These notes are free to read here, with no account.
What the Laisha app adds:
Free for ten days, then a subscription. We would rather write that here than have you find it later.