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249 questions found · practise this subject as a set Show 20 · 50 per page

#	Question	Subject and topic	Difficulty
161	Which nutrient forms the central atom of the chlorophyll molecule?	Agriculture Plant nutrients	Easy
162	Yellowing appears first on the older lower leaves of a maize crop while young leaves stay green. The most lik…	Agriculture Plant nutrients	Medium
163	Whiptail of cauliflower is linked to deficiency of:	Agriculture Plant nutrients	Medium
164	Why is a soil sample collected from many spots in a zig-zag pattern and then mixed?	Agriculture Plant nutrients	Hard
165	How many kilograms of urea supply 92 kg of nitrogen?	Agriculture Manures and fertilisers	Easy
166	Diammonium phosphate (DAP) is an example of a:	Agriculture Manures and fertilisers	Easy
167	How much muriate of potash is needed to supply 60 kg of K₂O to one hectare?	Agriculture Manures and fertilisers	Medium
168	A farmer applies 100 kg of DAP per hectare. How much nitrogen does this add?	Agriculture Manures and fertilisers	Medium
169	A rice farmer wants to cut urea use while keeping yields and soil health. Which plan follows integrated nutri…	Agriculture Manures and fertilisers	Hard
170	Which amendment is commonly used to reclaim alkali (sodic) soils?	Agriculture Problem soils and soil erosion	Easy
171	In water erosion, the stage in which a thin, uniform layer of soil is removed from the whole slope is called:	Agriculture Problem soils and soil erosion	Easy
172	A farm in western Rajasthan loses sandy topsoil every summer to strong winds. The most suitable long-term mea…	Agriculture Problem soils and soil erosion	Medium
173	A soil has a white crust, pH 8.0 and high electrical conductivity but low exchangeable sodium. It is best cla…	Agriculture Problem soils and soil erosion	Medium
174	Statement I: Bench terracing is suitable for steep hill slopes. Statement II: Acid soils are reclaimed by app…	Agriculture Problem soils and soil erosion	Hard
175	The most critical stage for irrigating wheat is:	Agriculture Irrigation	Easy
176	Which irrigation method usually gives the highest water application efficiency?	Agriculture Irrigation	Easy
177	A farmer applies a 5 cm deep irrigation to one hectare. What volume of water is used?	Agriculture Irrigation	Medium
178	Which measurement is used to judge the sodium hazard of irrigation water?	Agriculture Irrigation	Medium
179	In the IW/CPE approach, a ratio of 0.8 with an irrigation depth of 6 cm means irrigation is given when cumula…	Agriculture Irrigation	Hard
180	An area of land that drains all its runoff to a common outlet is called a:	Agriculture Drainage and watershed management	Easy