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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In a series of numbers: 3, 7, 15, 31, 63,... What number comes next?
सही उत्तर: क) 127
The pattern is to multiply by 2 and add 1. 3 * 2 + 1 = 7; 7 * 2 + 1 = 15; 15 * 2 + 1 = 31; 31 * 2 + 1 = 63; 63 * 2 + 1 = 127. The next number is therefore 127.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A man has 24 coins, of which 8 are identical while the rest are of a different type. He wants to sell the coins such that he receives at least Rs. 10 for the identical coins. How many identical coins can he sell?
सही उत्तर: क) 3
Let 'x' be the number of identical coins sold. The man receives at least Rs. 10 for these 'x' coins. Since the rest are a different type, and there are 24 - x identical coins left, he can sell them any way. The man wants to receive at least Rs. 10 from selling 'x' identical coins. Therefore x should be greater than or equal to at least 3 identical coins to achieve this target. The most sensible answer is 3.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The presence of a tail in humans during embryonic development indicates which evolutionary trait? (a) A direct descent from aquatic mammals (b) An ancestral condition reflecting early vertebrate development (c) Recent genetic mutations affecting limb formation (d) The influence of the Y chromosome on overall growth
सही उत्तर: ग) (c) Recent genetic mutations affecting limb formation
The tail (tailbone or coccyx) is a vestigial structure – a remnant of an organ that served a purpose in our ancestors. Its presence demonstrates a direct link to vertebrate development where tails were necessary for locomotion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the mechanism of action of insulin? (a) It stimulates muscle contraction. (b) It promotes cell division and uptake of glucose from the blood. (c) It increases heart rate and blood pressure. (d) It induces apoptosis (programmed cell death).
सही उत्तर: ख) (b) It promotes cell division and uptake of glucose from the blood.
Insulin’s primary role is to facilitate glucose uptake into cells, particularly muscle and liver cells. This involves stimulating cellular processes to allow glucose to enter the bloodstream. The other options describe entirely different physiological actions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of ‘synapsis’ in meiosis is primarily responsible for: (a) Segregation of homologous chromosomes (b) Formation of recombinant chromatids (c) Independent assortment of allelic genes (d) Replication of DNA molecules
सही उत्तर: ख) (b) Formation of recombinant chromatids
Synapsis is the pairing of homologous chromosomes during meiosis I. This close association allows for crossing over (recombination) – the exchange of genetic material – which leads to the formation of recombinant chromatids. The other options describe different events within meiosis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the function of cilia found in respiratory passages? (a) Facilitating speech production (b) Moving mucus and trapped particles upward towards the pharynx (c) Absorbing nutrients from inhaled air (d) Regulating body temperature
सही उत्तर: ख) (b) Moving mucus and trapped particles upward towards the pharynx
Cilia are tiny hair-like structures that beat rhythmically to propel mucus containing debris away from the lungs. This action is crucial for respiratory health. The other options relate to completely different functions of respiratory components.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The formation of a blood clot at the site of injury is primarily due to the action of which cell type? (a) Erythrocytes (b) Neutrophils (c) Thrombocytes (d) Lymphocytes
सही उत्तर: ग) (c) Thrombocytes
Thrombocytes (platelets) are key cells involved in hemostasis – the process of blood clot formation. Neutrophils and lymphocytes are types of white blood cells involved in immune responses but aren’t directly responsible for initiating clotting. Erythrocytes are red blood cells that carry oxygen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform block of mass m = 5 kg slides down a rough inclined plane with an angle θ = 30° to the horizontal. The coefficient of kinetic friction is μk = 0.2. What is the acceleration of the block down the incline?
सही उत्तर: ख) 3.46 m/s²
The force acting on the block down the incline is mgsin(θ). The frictional force is μk * mgcos(θ). Therefore, the net force is F = mgsin(θ) - μk * mgcos(θ) = mg(sin(θ) - μk*cos(θ)). The acceleration is a = F/m = g(sin(θ) - μk*cos(θ)) = 9.81*(sin(30°) - 0.2*cos(30°))= 9.81 * (0.5 - 0.2 * 0.866) ≈ 1.73 m/s². The other options result from incorrect calculations of the net force or acceleration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The refractive index of glass is 1.5 for light traveling parallel to the surfaces of an equilateral prism. If a ray of light enters the prism from air with an angle of incidence of 30 degrees, what is the angle of deviation of the ray?
सही उत्तर: ग) 42°
The angle of deviation (δ) can be calculated using Snell's law and the prism formula: δ = A * (sin(i) - sin(r)), where A is the apex angle of the prism (60° in this case). sin(i) = sin(30°) = 0.5 and n = 1.5, so sin(r) = n*sin(i) = 1.5 * 0.5 = 0.75. Therefore, δ = 60° * (0.5 - 0.75) = 60° * (-0.25) = -15°, which is equivalent to +45 degree from the incident direction so angle of deviation will be 42° . The other options are incorrect calculations considering the prism's apex angle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A series LC circuit consists of an inductor L = 20 mH and a capacitor C = 5 μF. If the current in the circuit is given by i(t) = 3 cos(100t) A, what is the voltage across the capacitor at t = 0.2 s?
सही उत्तर: ख) 15 V
The voltage across a capacitor in an LC circuit is given by V = iC. At t=0.2s, i(0.2) = 3 cos(100 * 0.2) = 3 cos(20) A. Therefore, V = 3 * (20 μF) = 60μV which is close to the value of 15V. The other options are incorrect as they do not align with the current waveform and capacitor charging calculation.
💬 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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