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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The practice of 'slash and burn' agriculture, traditionally employed in Nepal’s forested areas, primarily contributes to which environmental impact?
सही उत्तर: घ) Enhanced water infiltration rates via increased vegetation cover
Option 3 is correct. Slash-and-burn agriculture directly results in deforestation, leading to a reduction in carbon sequestration as trees are burned and removed from the ecosystem. Options 1, 2, and 3 present false assumptions about the impacts of this agricultural practice.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Agroforestry systems aim to enhance productivity and sustainability by integrating which of the following?
सही उत्तर: क) Purely crop production with minimal livestock integration
Option 0 is correct. Agroforestry inherently involves the coordinated management of trees and other plants alongside crops and/or animals to achieve synergistic benefits. Options 1, 2, and 3 misrepresent the core principles of agroforestry by either excluding key components or advocating for incompatible practices.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Nepal’s agriculture, the term ‘Bigha’ refers to which unit of land measurement?
सही उत्तर: ग) C) A traditional unit of land, approximately 0.16 hectares
Option C is correct. ‘Bigha’ is a traditional unit of land measurement commonly used in Nepal, roughly equivalent to 0.16 hectares. Options A and B represent larger units, while option D refers to a different local measure.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The term for 'the science concerned with the properties and effects of soil' is ____.
सही उत्तर: ग) pedology
Pedology specifically focuses on the study of soil. Geology deals with earth’s structure, hydrology with water, and climatology with weather.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A biologist specializing in the study of insects is known as an ____.
सही उत्तर: ख) entomologist
An entomologist is a scientist who studies insects. The other options refer to the study of birds (ornithologist), plants (botanist), and animals in general (zoologist).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the mass percentage of hydrogen in magnesium carbonate (MgCO₃)?
सही उत्तर: ग) 46.67%
First calculate the molar masses: MgCO₃ = 24.3 + 12.0 + 3*16.0 = 89.0 g/mol; H₂O = 2.0 + 16.0 = 18.0 g/mol. Then, the mass percentage of hydrogen in MgCO₃ is (2 * 1.0) / 89.0 * 100 = 2.3% which is not among the answers. However, if we consider that magnesium carbonate decomposes into magnesium oxide and carbon dioxide, one mole of magnesium carbonate would give one mole of carbon dioxide (which contains C) and one mole of Magnesium oxide (Mg). The hydrogen comes from water molecule. So this question has a mistake.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The percentage composition of iron (Fe) in hydrated copper sulphate (CuSO₄·xH₂O) is 12%. The value of x will be:
सही उत्तर: घ) 7
If the percentage of Iron is 12%, this means that 12% of CuSO₄·xH₂O contains Fe. Since Cu has a molar mass of approximately 63.5 g/mol and Fe has a molar mass of approximately 55.8 g/mol, the ratio of Cu to Fe in the hydrated copper sulphate is 63.5:55.8. This simplifies to 1:0.94. Therefore, 12% represents 0.94 moles of Fe per mole of CuSO₄·xH₂O. The percentage composition can be calculated using the molar masses (molar mass of CuSO₄ is roughly 159.6 g/mol). The answer 6 arises from a calculation that requires knowing how to calculate the number of moles based on percentage composition. C4 is incorrect as it does not match this ratio.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A compound has the molecular formula C₃H ₆O₃. What is its empirical formula?
सही उत्तर: ख) C₃H₆O₃
The molecular formula C₃H₆O₃ has a mole ratio of 3:6:3 which simplifies to 1:2:1. Therefore, the empirical formula is CH₂O. The most tempting answer, C₆H₁₂O₆, represents glucose and does not match the given formula. “CH₃O” is an incorrect structural arrangement for this compound.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary purpose of mulching in agricultural practices?
सही उत्तर: ख) To suppress weed growth and conserve moisture
Mulching involves covering the soil surface with organic materials like straw or wood chips. This reduces evaporation, suppresses weed growth, and moderates soil temperature – making it a key practice for water conservation and overall crop health. The other options describe alternative farming techniques that do not focus on moisture management.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If I were a bird, I _______ fly.
सही उत्तर: क) would
The correct answer is 'would'. This uses the conditional tense to express what one would do if they were a bird. The other options are incorrect as they describe different tenses and functions.
💬 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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