कृषि र वन सामान्य ज्ञान – Agriculture & Forestry GK MCQ
कृषि र वन सामान्य ज्ञान – कृषि/वन प्रवेश
Agriculture & Forestry GK · Agriculture, Veterinary & Forestry Entrance · ३९३ प्रश्न
३९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि र वन सामान्य ज्ञान: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Acidic soils are commonly corrected by applying:
सही उत्तर: ख) agricultural lime
Lime (calcium carbonate) neutralises soil acidity and raises pH. Sulphur and ammonium sulphate make soil more acidic, while gypsum is used for sodic soils.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How much P2O5 is supplied by 150 kg of DAP (18-46-0)?
सही उत्तर: क) 69 kg
P2O5 = 150 x 0.46 = 69 kg. 27 kg is the nitrogen supplied (150 x 0.18).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many kg of urea (46% N) are needed to supply 92 kg of nitrogen?
सही उत्तर: घ) 200 kg
Urea needed = 92 / 0.46 = 200 kg. Using 100 kg would supply only 46 kg N.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The nutrient grade of diammonium phosphate (DAP) is:
सही उत्तर: ग) 18-46-0
DAP contains 18% N and 46% P2O5. 46-0-0 is urea, 0-0-60 is muriate of potash, and about 0-16-0 is single super phosphate.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Muriate of potash (MOP) is chemically:
सही उत्तर: ख) potassium chloride (KCl)
Muriate of potash is potassium chloride, containing about 60% K2O. 'Muriate' is an old term for chloride.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Interveinal chlorosis appearing first on the youngest leaves is typical of deficiency of:
सही उत्तर: क) iron
Iron is immobile in plants, so its deficiency shows on new leaves as yellowing between green veins. Nitrogen and magnesium are mobile, so their deficiency appears first on older leaves.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Whiptail' of cauliflower is caused by deficiency of:
सही उत्तर: घ) molybdenum
Molybdenum deficiency causes narrow, strap-like 'whiptail' leaves in cauliflower. Boron deficiency causes browning of the curd and hollow stem instead.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Purplish colouration of leaves, especially in young maize plants, is a typical symptom of deficiency of:
सही उत्तर: ख) phosphorus
Phosphorus deficiency causes accumulation of anthocyanin, giving purple leaves. Nitrogen deficiency instead causes general yellowing of older leaves.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Who is known as the 'Father of the Green Revolution' worldwide?
सही उत्तर: क) Norman Borlaug
Norman Borlaug developed high-yielding semi-dwarf wheat varieties and received the Nobel Peace Prize in 1970. M. S. Swaminathan is called the father of the Green Revolution in India.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Bt cotton is resistant to insect pests because it carries a gene from:
सही उत्तर: घ) Bacillus thuringiensis
Bt stands for Bacillus thuringiensis, whose cry gene produces an insecticidal protein toxic to bollworms. Agrobacterium is used as a vector for gene transfer, not as the source of the Bt toxin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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