कृषि, पशु र वन विज्ञान प्रवेश
कृषि, पशु र वन विज्ञान प्रवेश
Agriculture, Veterinary & Forestry Entrance · २,४७५ प्रश्न
२,४७५ 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:
सही उत्तर: ख) Contact process
The contact process oxidises SO₂ to SO₃ over V₂O₅ catalyst, and SO₃ is then converted to H₂SO₄. The Ostwald process makes nitric acid.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The enzyme zymase converts glucose into:
सही उत्तर: क) Ethanol and carbon dioxide
In alcoholic fermentation by yeast, zymase converts C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂. Invertase, another yeast enzyme, converts sucrose into glucose and fructose.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Gypsum (CaSO₄·2H₂O) is commonly used for the reclamation of:
सही उत्तर: घ) Sodic (alkali) soils
Calcium from gypsum replaces exchangeable sodium in sodic soils, and the sodium is then leached as Na₂SO₄. Acidic soils are corrected with lime, not gypsum.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The hybridisation of each carbon atom in ethyne (C₂H₂) is:
सही उत्तर: घ) sp
Each carbon in HC≡CH forms two σ bonds and two π bonds, so it is sp hybridised with a linear 180° geometry. sp² applies to ethene's double-bonded carbons.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The number of moles in 3.011 × 10²³ molecules of a substance is:
सही उत्तर: ख) 0.5
Moles = number of particles / Avogadro's number = 3.011 × 10²³ / 6.022 × 10²³ = 0.5. One mole would contain 6.022 × 10²³ particles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The number of neutrons in the isotope chlorine-37 (atomic number 17) is:
सही उत्तर: क) 20
Neutrons = 37 − 17 = 20. Chlorine-35, the other common isotope, has 18 neutrons.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Deficiency of vitamin C causes:
सही उत्तर: ग) Scurvy
Vitamin C (ascorbic acid) is needed for collagen, and its lack causes bleeding gums (scurvy). Rickets is caused by vitamin D deficiency.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which is the largest gland in the human body?
सही उत्तर: ग) Liver
The liver is the largest gland and also stores glycogen and detoxifies substances. The thyroid is the largest purely endocrine gland.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In adult humans, red blood cells are formed mainly in the:
सही उत्तर: ग) Red bone marrow
Erythropoiesis in adults occurs in red bone marrow of bones like the sternum, ribs and vertebrae. The liver forms RBCs in the foetus, and the spleen destroys old RBCs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Bile is produced by the:
सही उत्तर: ग) Liver
Bile is produced by the liver and only stored and concentrated in the gall bladder. It emulsifies fats but contains no digestive enzymes.
💬 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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