कृषि, पशु र वन विज्ञान प्रवेश

कृषि/वन प्रवेश: प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

सही: ० / ०

421. A farmer requires 92 kg of nitrogen for their crops. Considering urea is 46% nitrogen, how many kilograms of urea are needed?

     क187.5 kg ख190 kg ग200 kg घ210 kg
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

422. The practice of shifting cultivation in Nepal’s hilly regions, where farmers clear patches of forest for temporary agriculture before moving on, is commonly referred to as:

     कIntensive farming खPasture rotation गJhumming (slash-and-burn) घForest gardening
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     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

423. What phenomenon explains the enhanced growth rate often observed in F1 hybrid crops like corn?

     कGene flow खGenetic drift गHybrid vigour घEpigenetic modification
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     छलफल / प्रश्न उत्तरमा गल्ती छ

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     टिप्पणी जाँचपछि मात्र देखिन्छ।

424. In 2018, International Day of Forests was observed globally to promote which primary objective?

     कIncreased logging for timber production खPromotion of sustainable forest management practices गExpansion of agricultural land into forested areas घEstablishment of new national parks solely for tourism
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425. Which of the following cropping practices is MOST suitable for maintaining soil fertility on sloping agricultural land in Nepal?

     कRice cultivation with terracing खWheat cultivation with minimum tillage गCrop rotation including legumes घMonoculture of maize without organic amendments
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     टिप्पणी जाँचपछि मात्र देखिन्छ।

426. ‘Obliterated’ as used in ‘The flood obliterated all traces of…’ most closely means:

     कa) Damaged slightly खb) Completely destroyed गc) Marked briefly घd) Covered entirely
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     छलफल / प्रश्न उत्तरमा गल्ती छ

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427. What does the term 'equivalence point' in a titration signify?

     कThe point where two reactants are equal in mass खThe point at which one reactant has been completely neutralized गThe endpoint of the titration reaction घThe point where the solution turns blue
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428. Which of the following acids has the highest acidity?

     कAcetic acid (CH₃COOH) खFormic acid (HCOOH) गCitric acid (C₆H₇O₇) घBenzoic acid (C₆H₅COOH)
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429. What is the primary reason for using dilute sulfuric acid (H₂SO₄) as a catalyst in the esterification reaction between acetic acid and ethanol?

     कIt increases the temperature of the reaction खIt provides a large excess of water गIt protonates the carbonyl group, making it more reactive घIt directly reacts with ethanol to form ethyl acetate
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430. The reaction between calcium carbide and water produces acetylene gas. What is the main product formed during this reaction, besides acetylene?

     कCalcium carbonate खEthylene गHydrogen घMethane
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     टिप्पणी जाँचपछि मात्र देखिन्छ।