कृषि, पशु र वन विज्ञान प्रवेश
कृषि, पशु र वन विज्ञान प्रवेश
Agriculture, Veterinary & Forestry Entrance · २,४९३ प्रश्न
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
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
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Sulphuric acid is manufactured on a large scale by the contact process, which involves oxidation of SO₂ to SO₃ with vanadium pentoxide catalyst.
सही उत्तर: क) burning sulfur directly
The contact process uses vanadium pentoxide as a catalyst to facilitate the conversion of sulfur dioxide (SO₂) to sulfur trioxide (SO₃), which is then used to produce concentrated sulfuric acid.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Choose the correct spelling: ‘A systematic study of plants, especially in their natural habitats.’
सही उत्तर: क) botany
‘Botany’ is the scientific study of plants. The other options are incorrect spellings.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank with the most appropriate word: ‘Despite the heavy rains, the farmer continued his ____.’
सही उत्तर: ख) harvest
‘Harvest’ refers to the gathering of crops after they have been grown. The other options – ‘vacation’, ‘commute’, and ‘rest’ – do not fit the context of agricultural work.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Select the correct question tag for the following statement: ‘The local market sells fresh vegetables.’
सही उत्तर: क) isn't it?
A question tag is used to confirm information stated in a sentence. The correct tag for ‘The local market sells fresh vegetables’ is ‘isn’t it?’ because the statement is affirmative.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the role of oxidation states in predicting reaction stoichiometry?
सही उत्तर: ख) The sum of oxidation states for all atoms in a molecule or ion is equal to zero.
In redox reactions, the principle of conservation of mass requires that the sum of the oxidation states of all atoms must remain constant during the reaction (the total oxidation state is always 0). This concept allows for efficient stoichiometric calculations and balancing. Options 2 & 3 are partially correct but do not explain how oxidation states are used in balancing. Option 4 incorrectly asserts a lack of relevance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A farmer plants maize at a spacing of 4m x 6m. If the farmer has a land area of 1 hectare (10,000 square meters), what is the maximum number of maize plants that can be planted in this field?
सही उत्तर: ग) 7500
The correct answer is (2) 5000. First, calculate the area per plant: 4m x 6m = 24 square meters. Then divide total area by this: 10,000 sq meters / 24 sq meters/plant = 416.67 plants. Rounding to the nearest whole number gives us approximately 5000 plants. The other options are significantly lower than what can be achieved with this spacing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary purpose of ‘puddling’ in rice cultivation?
सही उत्तर: ख) To improve soil aeration and drainage
The correct answer is (1) To improve soil aeration and drainage. Puddling involves tilling the soil deeply to break up compacted layers, creating larger pore spaces that facilitate water infiltration and root growth in rice paddies. The other options reflect different agricultural techniques.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In forestry practices, 'clear-cutting' refers to a method that involves...
सही उत्तर: क) Selective removal of mature trees while leaving younger ones
The correct answer is (0) Complete removal of all trees within a defined area. Clear-cutting is characterized by the total harvesting of trees from a given space, creating an open field. The other options describe selective logging or reforestation techniques respectively.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Forest Survey of India estimates that the total forest area in Nepal is approximately 21.7%. What percentage of Nepal’s total landmass is covered by forests according to this estimate?
सही उत्तर: ख) 30%
The correct answer is (1) 30%. According to the Forest Survey of India's reports (updated in 2023), Nepal has around 30% of its total land area covered by forest. The other options represent significantly different percentages, making them incorrect given this key statistic.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Azolla, a water fern, plays a crucial role in rice cultivation. Its ability to fix atmospheric nitrogen contributes significantly to soil fertility. What is the primary mechanism by which Azolla achieves this nitrogen fixation?
सही उत्तर: ख) Through symbiotic association with cyanobacteria
The correct answer is (1) Through symbiotic association with cyanobacteria. Azolla forms a symbiotic relationship with *Anabaena* cyanobacteria, which possess the enzymes necessary to convert atmospheric nitrogen into ammonia – a vital nutrient for plant growth. The other options are incorrect: photosynthesis doesn’t directly produce ammonia, Azolla doesn't absorb nitrogen from rainfall, and it doesn’t break down organic matter to release nitrogen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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