चिकित्सा शिक्षा आयोग (CEE) एमबीबीएस प्रवेश परीक्षा तयारी
चिकित्सा शिक्षा आयोग (CEE) – एमबीबीएस प्रवेश परीक्षा
CEE – MBBS Entrance · Medical Education Commission – CEE
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MBBS/BDS/Nursing 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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Which of the following cell junctions contributes primarily to maintaining tissue integrity by preventing leakage between adjacent cells?
सही उत्तर: घ) d) Tight junctions
Tight junctions (option d) are specialized structures that create a seal, preventing passage of molecules between epithelial cells. Gap junctions facilitate communication, desmosomes provide strong adhesion, and adherens junctions connect to the cytoskeleton.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of metamorphosis observed in amphibians such as frogs involves significant changes in body form. Which of the following best describes the primary driving force behind this transformation?
सही उत्तर: ख) b) Hormonal regulation, primarily driven by thyroid hormones.
Option (b) is correct; thyroid hormone levels are crucial for initiating and controlling amphibian metamorphosis. Option (a) describes general growth, option (c) implies random genetic changes, and option (d) doesn’t explain the organized developmental shift.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A and B are standing facing each other. A says to B, ‘If you subtract my age from yours, the result is 3.’ B says to A, ‘If you subtract my age from yours, the result is 5.’ What are their ages?
सही उत्तर: ख) 21 and 26
Let A's age be x and B's age be y. From A to B: y - x = 3. From B to A: x - y = 5. Adding the two equations, we get: (y-x) + (x-y) = 3+5 => 0=8 which is a contradiction. The question likely has an error.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The letters of the word 'COMPUTER' are arranged alphabetically. What is the fourth letter?
सही उत्तर: क) C
Arranging 'COMPUTER' alphabetically gives: C, E, M, O, P, R, T. The fourth letter is 'O'.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A man is standing between two women, A and B. A says to B, 'My mother is your father’s wife.' What is the relationship between A and B?
सही उत्तर: क) Sisters
The statement indicates that B's father's wife is A's mother. This implies A and B are sisters.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A series circuit consists of a 5 Ω resistor connected to a 12 V battery. Calculate the current flowing through the circuit.
सही उत्तर: ख) 2.4 A
Using Ohm's Law, V = IR, we can solve for the current: I = V/R = 12 / 5 = 2.4 Amperes. The correct answer reflects this fundamental principle of electrical circuits.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A current of 3 Amperes flows through a resistor of 12 Ohms. What is the power dissipated by the resistor?
सही उत्तर: क) 40 Watts
Power dissipation in a resistor is calculated using the formula P = I²R, where I is the current and R is the resistance. In this case, P = (3)² * 12 = 9 * 12 = 108 Watts. The most tempting answer of 36W is incorrect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A projectile is fired with an initial velocity of 15 m/s at an angle of 60° to the horizontal. Neglecting air resistance, what is the magnitude of its horizontal component of velocity just before impact? (Take g = 9.8 m/s²)
सही उत्तर: ख) 10.6 m/s
The horizontal component of the initial velocity is given by vₓ = u cos θ, where u is the initial velocity and θ is the angle. In this case, vₓ = 15 * cos(60°) = 7.5 m/s. The most tempting answer (15.0 m/s) is incorrect as it uses the initial velocity directly instead of calculating the component.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following reagents would react with aldehydes to form a carbon-carbon bond?
सही उत्तर: ग) Grignard reagent
Grignard reagents (RMgX) are strong nucleophiles and bases that readily attack carbonyl carbons. In this case, the carbon of the aldehyde reacts with the Grignard reagent to form a new carbon-carbon bond. The other reagents do not directly participate in this type of reaction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following combinations would result in an increase in the rate of a chemical reaction?
सही उत्तर: ग) Adding a catalyst
A catalyst works by providing an alternative reaction pathway with a lower activation energy. This dramatically increases the rate of the reaction. The other options would generally slow down a chemical reaction.
💬 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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