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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The phenomenon of ‘sink’ in plants refers to:
सही उत्तर: ख) A location in the plant that actively absorbs nutrients and sugars from elsewhere in the plant.
A ‘sink’ represents an area of high demand for carbohydrates produced by photosynthesis. It is where sugars are actively taken up from the phloem. Option 2 is correct; the others relate to different plant processes or structures.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If P × Q means P is the father of Q, P + Q means P is the sister of Q, and P − Q means P is the brother of Q, what is the relationship between A and B if A + B = B?
सही उत्तर: क) A is B's sister
If A + B = B, then according to the defined operations, 'B' indicates that ‘A’ is the sister of ‘B’. The other options do not match this relationship.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Consider this pattern: 1, 11, 21, 1211, 111221. What will the next number in the sequence be?
सही उत्तर: क) 312213
This is the ‘look-and-say’ sequence. Each term describes the previous term. ‘1’ becomes ‘one 1’ (11), ‘11’ becomes ‘two 1s’ (21), ‘21’ becomes ‘one 2, one 1’ (1211), ‘1211’ becomes ‘one 1, one 2, two 1s’ (111221) and so on. The next term will be 'three 1s, two 2s, one 1'. This equates to 312211.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A capacitor C has a charge Q on it. If the capacitance is doubled and the charge remains constant, what is the new capacitance? (Given: ε₀ = permittivity of free space)
सही उत्तर: ग) 2Q
Capacitance (C) is defined as C = Q/V, where Q is the charge and V is the voltage. If the capacitance is doubled (C' = 2C), with the same charge Q, then the new voltage must be halved (V' = V/2). Therefore, the new capacitance is C' = Q / (V/2) = Q/2. The option 'Q/4' is incorrect because it does not account for the proportional relationship between charge and capacitance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A particle of mass m moves with velocity v in the x-direction. If its velocity is reversed and it moves with same magnitude then the change in momentum is: (Given: 1N=1 kg.m/s)
सही उत्तर: ख) mv
Momentum (p) = mv. When the velocity is reversed, the new velocity has the same magnitude but opposite direction. Therefore, the change in momentum is Δp = m(v_new - v_old) = m(-v - v) = -2mv. The correct answer is 2mv, and option 'mv' would be wrong because it doesn't account for the reversal of velocity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform rod of length L is placed on a horizontal surface with one end in contact with a wall and the other end in contact with a fixed point. The coefficient of friction between the rod and the wall is μ. What is the maximum static friction force that can be exerted on the rod? (Given: g)
सही उत्तर: घ) 4μg
The maximum static friction force occurs when the rod is about to move. The frictional force resisting motion at the wall balances the component of weight acting perpendicular to the wall. This component is mgcosθ where θ is the angle with the wall. Therefore Ff = μmgcosθ ≈ 3μg . This makes 3μg the correct option, unlike options involving only 'm' or a smaller multiple of µg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If a number is divisible by 3, what is the next possible value of the number after 15?
सही उत्तर: ख) 18
A number divisible by 3 means it leaves no remainder when divided by 3. The multiples of 3 are 3, 6, 9, 12, 15, 18... So the next value after 15 is 18. Options 17, 19 and 20 do not satisfy this condition.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A rectangular garden measuring 12m x 8m is surrounded by a path of width 2m. What is the area of the path?
सही उत्तर: ख) 56 sq m
The outer dimensions of the garden plus the path are (12+2(2))m x (8+2(2))m = 16m x 12m. Therefore, the area of the larger rectangle is 16 * 12 = 192 sq m. The area of the garden itself is 12 * 8 = 96 sq m. The area of the path is the difference: 192 - 96 = 96 sq m. Options 40, 56 and 80 are incorrect calculations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A solution is prepared containing 0.2 M potassium chloride (KCl) and 0.1 M sodium sulfate (Na₂SO₄) in water. What is the concentration of chloride ions (Cl⁻) in this solution?
सही उत्तर: घ) 0.4 M
The total ionic strength of the solution determines the ion concentrations. KCl dissociates completely, providing 0.2M Cl- ions. Na₂SO₄ is sparingly soluble and only partially dissociates. This option reflects the combined concentration correctly.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The decomposition of lead(II) iodide (PbI₂) produces iodine (I₂) and lead (Pb). The balanced chemical equation for this reaction is: PbI₂(s) → I₂(s) + Pb(s). If 10 grams of PbI₂ decomposes, what mass of iodine will be produced?
सही उत्तर: ख) 5.83 g
First, calculate the molar mass of PbI₂ (207.2 + 126.9 = 334.1 g/mol). Then, use stoichiometry to determine the moles of I₂ produced from 10g of PbI₂. Finally, multiply the moles by the molar mass of I₂ (53.8 g/mol) to find the mass.
💬 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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