कृषि, पशु र वन विज्ञान B.Sc. Forestry प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Forestry प्रवेश
B.Sc. Forestry Entrance · Agriculture, Veterinary & Forestry Entrance
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि, पशु र वन विज्ञान 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 neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) produces which salt? (Molar mass HCl = 36.5 g/mol, Molar mass NaOH = 40 g/mol)
सही उत्तर: क) Sodium Chloride
The reaction between a strong acid and a strong base always produces a salt containing the ions from both reactants. HCl reacts with NaOH to form NaCl and water. The other salts are formed from different reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A solution has a molarity of 0.5 M and contains 2 moles of solute. What is the volume of the solution in liters? (Molar Volume of ideal gas = 22.4L/mol)
सही उत्तर: घ) 177.6
Molarity is defined as moles per liter, so Molarity = moles / volume. Therefore, volume = moles / Molarity = 2 moles / 0.5 M = 4 liters. The calculation of 88.8L and 177.6L are incorrect calculations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following acids is commonly found in volcanic regions and contributes to corrosion? (Molar mass H₂SO₄ = 98 g/mol)
सही उत्तर: ख) Sulfuric Acid
Sulfuric acid is a strong mineral acid frequently produced by volcanic activity. It's known for its corrosive properties. The other options are organic acids, primarily found in fruits and plants, and do not typically originate from volcanoes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The percentage by mass of sodium chloride (NaCl) in a solution containing 10g of NaCl dissolved in 500g of water is approximately what? (Molar mass of NaCl = 58.44 g/mol)
सही उत्तर: ख) 6.3%
The calculation involves finding the mass percent, which is (mass of NaCl / total mass) * 100%. (10g / 500g) * 100% = 2%. The most tempting option, 38.1%, represents a highly concentrated solution and is incorrect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of converting ammonia (NH₃) into nitric acid (HNO₃) in the atmosphere is called:
सही उत्तर: ग) Nitrogen Fixation
Nitrogen fixation is the biological conversion of atmospheric nitrogen gas (N₂) into usable forms, primarily ammonium ions (NH₄⁺). The primary industrial process that converts ammonia to nitric acid involves reduction in the presence of oxygen. The other options represent different chemical processes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What volume of 0.5 M hydrochloric acid (HCl) is required to completely neutralize 10 cm³ of 1 M sodium hydroxide (NaOH) solution? (Molar mass of HCl = 36 g/mol, Molar mass of NaOH = 40 g/mol)
सही उत्तर: ग) 30 cm³
The neutralization reaction between HCl and NaOH produces NaCl and water. Using stoichiometry, 1 mole of HCl reacts with 1 mole of NaOH. Therefore, to neutralize 10 cm³ (which is equivalent to 10 mL or 0.01 L) of 1 M NaOH, you'll need 10 cm³ (or 0.01L) of 0.5M HCl. This can be calculated using the equation: M₁V₁ = M₂V₂ where M₁ and V₁ are the molarity and volume of the acid and M₂ and V₂ are the molarity and volume of the base.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The decomposition of potassium nitrate (KNO₃) produces potassium nitrite (KN₂O₂) and oxygen gas. Which statement correctly describes the balanced chemical equation for this reaction?
सही उत्तर: ख) 2KNO₃ → 2KNO₂ + O₂
The balanced equation for the decomposition of potassium nitrate is 2KNO₃ → 2KNO₂ + O₂. This equation ensures that there are equal numbers of each atom on both sides, adhering to the law of conservation of mass. The other options either have incorrect coefficients or include elements not present in the original compound.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Read the passage: ‘The farmer meticulously pruned his guava trees, ensuring each branch directed sunlight towards the ripening fruit. This practice was crucial for maximizing yield and producing high-quality guavas.’ What is the main purpose of pruning the guava trees?
सही उत्तर: ग) To direct sunlight to the fruit.
The passage explicitly states that the farmer pruned ‘ensuring each branch directed sunlight towards the ripening fruit’. This highlights the key reason for pruning – maximizing light exposure for better fruit production, making option 2 the correct response. The other options are irrelevant details.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Choose one word for: ‘To cultivate a special type of rice’
सही उत्तर: क) harvesting
‘Cropping’ accurately describes the act of cultivating a specific crop like rice. Harvesting refers to gathering, sowing is planting, and processing relates to refining the product.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank: The veterinarian advised the farmer to administer ______ to the sick cow.
सही उत्तर: क) antibiotics
Antibiotics are commonly used by veterinarians for treating bacterial infections in livestock. While vaccines, fertilizers and pesticides have different uses, antibiotics are most relevant in this context.
💬 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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