मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · २,०३९ प्रश्न
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CEE 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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A gas occupies a volume of 2 m³ at 300 K. If the pressure is increased to 300 kPa, what will be the new temperature (in Kelvin)?
सही उत्तर: ख) 450 K
According to Charles’ Law, for a fixed amount of gas at constant pressure, the volume is directly proportional to the absolute temperature. V₁/T₁ = V₂/T₂. Therefore, T₂ = (V₂/V₁) * T₁ = (2/2) * 300 K = 300 K. The most tempting option, 450K, is incorrect as it’s not derived from the given information directly.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The potato tuber develops as a modified _____, playing a key role in vegetative propagation.
सही उत्तर: ग) Root
The potato tuber arises from modified roots (specifically, stolons or rhizomes), enabling the plant to store nutrients and reproduce vegetatively. The other options represent different plant structures with distinct functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes Cycadophyta (क्याडोपता) as a ‘living fossil’?
सही उत्तर: ख) Their evolutionary history can be traced back to ancient plant lineages, exhibiting relatively little change over millions of years
Cycads represent a lineage that has changed minimally over long geological time periods (millions of years), making them ‘living fossils’. They retain characteristics from ancient plant lineages. The other options describe adaptations or metabolic differences, not the core reason for their classification.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The application of ethephon to ripening bananas is based on its ability to:
सही उत्तर: ग) Induce ethylene biosynthesis, accelerating fruit maturation
Ethephon triggers ethylene production. Ethylene is a plant hormone that directly induces the biochemical processes leading to ripening – specifically, changes in cell wall structure and softening. The other options describe actions unrelated to ethephon’s effect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the role of chlorophyll molecules within photosystems during photolysis of water?
सही उत्तर: ख) They directly catalyze the splitting of water into hydrogen ions and oxygen
Chlorophyll molecules within photosystems absorb photons of light, triggering the excitation of electrons which then drive the splitting of water molecules. The other options misrepresent the mechanism or function.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary photosynthetic product of photosynthesis, which directly contributes to the formation of glucose during the Calvin cycle, is:
सही उत्तर: ग) Glucose
Glucose is the direct product generated in the Calvin cycle following carbon fixation. The other options are either byproducts or reactants involved in photosynthesis but not the primary output directly contributing to glucose formation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following factors primarily influences the rate of a chemical reaction?
सही उत्तर: ख) Temperature
The temperature has a significant impact on the kinetic energy of molecules and thus, directly affects the frequency of collisions. Increasing the temperature increases the reaction rate. The other options are irrelevant to the kinetics of chemical reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements correctly describes the properties of strong acids?
सही उत्तर: ग) They completely dissociate into ions in water
Strong acids completely dissociate into ions when dissolved in water, producing a large concentration of H⁺ ions. This leads to a significant conductivity and a low pH value. The other options describe weak acids which do not fully dissociate.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The equilibrium constant K for the reaction: N₂O₄(g) ⇌ 2NO₂(g) is 10⁻³ at 300K. If the initial concentration of N₂O₄ is 0.5 M, what is the concentration of NO₂ at equilibrium?
सही उत्तर: ख) 0.45
According to Le Chatelier's principle, equilibrium shifts to relieve stress. In this case, the shift favors the forward reaction to consume N₂O₄ and increase NO₂ concentration. Using an ICE table (Initial, Change, Equilibrium) will give a final answer of 0.45.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A farmer has chickens and cows. He counts his animals and gets 70. When he counts his legs, he gets 184. How many chickens does the farmer have?
सही उत्तर: घ) 60
Let 'c' be the number of chickens and 'w' be the number of cows. We know: c + w = 70 (total animals) and 2c + 4w = 184 (total legs). Solving this system of equations yields c=30.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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