चिकित्सा शिक्षा आयोग (CEE) बीडीएस प्रवेश परीक्षा तयारी
चिकित्सा शिक्षा आयोग (CEE) – बीडीएस प्रवेश परीक्षा
CEE – BDS 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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A particle moves along a straight line with constant acceleration. Its displacement from the origin at time t is given by x = 3t² + 2t – 6. What is the velocity of the particle at t = 2 seconds?
सही उत्तर: ख) 14 m/s
The velocity is the derivative of displacement with respect to time. dx/dt = 6t + 2. At t=2 seconds, dx/dt = 6(2) + 2 = 14 m/s. The tempting answer of 10 m/s arises from simply calculating the displacement at t=2 and then using calculus; however, this doesn't directly give the velocity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The van Arkel method utilizes a catalytic process to produce ultrapure iodine (I₂) from its corresponding compound. This process relies on the removal of hydrogen gas as a byproduct, driven by a chemical equilibrium shift. What is the primary chemical reaction involved in this purification?
सही उत्तर: क) I₂ + H₂ → 2HI + Energy
Option 0 is correct. The van Arkel method uses iodine chloride (ICl) and heat to decompose it into iodine and chlorine gas, shifting the equilibrium towards iodine production. Option 1 represents the formation of hydrogen iodide, which is not part of this process; option 2 describes a different reaction involving chlorine, and option 3 incorrectly suggests a simple thermal decomposition.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A ball of mass 0.5 kg hits a wall perpendicularly at a velocity of 10 m/s and rebounds with a velocity of 8 m/s. What is the change in momentum of the ball?
सही उत्तर: ख) 5 Ns
The impulse (change in momentum) is defined as the force multiplied by time. In this case, the impulse is equal to the mass times the change in velocity: 0.5 kg * (10 m/s - 8 m/s) = 0.5 kg * 2 m/s = 1 Ns. The most tempting answer, 6 Ns, arises from a misunderstanding of momentum conservation; the impulse is not simply the product of mass and final velocity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a code, ‘sunu’ means ‘morning’, ‘manu’ means ‘evening’ and ‘katu’ means ‘night’. What does ‘suna’ mean?
सही उत्तर: क) afternoon
The word 'suna' is a rearrangement of the letters in 'sunu', which directly translates to 'morning'.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A is older than B. B is older than C. C is older than D. Who is the youngest?
सही उत्तर: क) D
This is a classic transitive relationship. Since A > B > C > D, D must be the youngest.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If A represents the number 1, B represents the number 2, and so on until Z represents the number 26, what is the numerical value of the word 'TEAM'?
सही उत्तर: ख) 84
T=20, E=5, A=1, M=13. Adding these values: 20 + 5 + 1 + 13 = 39. This is incorrect, so let’s recalculate. T=20, E=5, A=1, M=13. Therefore TEAM = 20+5+1+13=39.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Find the odd one out: GHT, JKL, MNO, PQR
सही उत्तर: घ) WXY
The pattern in the first four options is consecutive letters in the alphabet. ‘STU’ does not follow this sequence; therefore it is the odd one out.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A train travels 120 km in 3 hours and a bus travels 180 km in 3 hours. What is the relative speed of the train with respect to the bus?
सही उत्तर: क) 10 km/h
The train's speed is 120 km / 3 hours = 40 km/h. The bus’s speed is 180 km / 3 hours = 60 km/h. Therefore, the relative speed of the train with respect to the bus is |60 - 40| = 20 km/h.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A transformer has a primary winding with 100 turns and a secondary winding with 1000 turns. If an alternating current of 20V is applied to the primary winding, what will be the voltage across the secondary winding?
सही उत्तर: घ) 2000V
The transformer works on the principle of electromagnetic induction and maintains a constant ratio of turns. Voltage in secondary = Voltage in primary * (Number of turns in secondary / Number of turns in primary) = 20V * (1000/100) = 20V.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two charges +q and -q are separated by a distance r. The force between them is F. If the charge +q is doubled while maintaining the same separation, what will be the new force?
सही उत्तर: ख) 4F
The force between two charges is given by Coulomb's Law: F = k(q1*q2)/r², where k is the constant of proportionality. Doubling q1 while maintaining r and k remains the same results in F = k(2q1)*q2/r² = 2k(q1*q2)/r² = 2F.
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।