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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If a clock strikes every fifteen minutes, how many times will it strike in a 12-hour period?
सही उत्तर: क) 72
The clock strikes on the hour (1, 2, ..., 12) and also on every 15 minutes within each hour. This means it strikes 12 times during the hours and then 12 additional times for the 15-minute intervals which totals 24 strikes per hour. Over 12 hours that's 24*12 = 288. However, the question asks for how many *times* it will strike, implying a total count of the strikes. The answer is 288.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Consider the following sequence: 1, 4, 9, 16, 25... What is the next number in this series?
सही उत्तर: क) 30
The sequence consists of perfect squares (1², 2², 3², 4², 5²...). The next term is 6² which equals 36. The other options are numbers that do not belong to this square number series.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pattern is formed with shapes: Circle, Square, Triangle, Circle, Square, ___. What shape comes next?
सही उत्तर: क) Rectangle
The pattern repeats ‘Circle, Square, Triangle’. Therefore, the next shape in the sequence is a Circle. The other options are geometric shapes that do not fit the established pattern.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The formation of the blastocoel cavity during early embryonic development in mammals is primarily due to: (a) Fluid pressure generated by active cell migration (b) The dissolving of intercellular junctions between cells (c) Osmotic movement of water into the embryo (d) The contraction of muscle fibers
सही उत्तर: ख) (b) The dissolving of intercellular junctions between cells
The blastocoel forms as cells begin to move and migrate during early gastrulation, creating an internal fluid-filled cavity. This pressure is primarily driven by the active movements of cells rather than dissolution of intercellular junctions (option b) or direct contraction. Option (c) describes osmosis but doesn’t explain the dynamic formation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the mechanism of action of a cnidocyte (stinging cell) found in jellyfish? (a) It secretes digestive enzymes directly into its prey’s tissues (b) It triggers rapid depolarization of the nematocyst, ejecting a coiled toxin (c) It absorbs nutrients from surrounding water through osmosis (d) It facilitates gas exchange between blood and water
सही उत्तर: ख) (b) It triggers rapid depolarization of the nematocyst, ejecting a coiled toxin
Cnidocytes contain specialized organelles called nematocysts that are triggered by contact. Upon stimulation, they rapidly discharge a coiled, venomous thread or tube to capture prey. Option (a) is wrong; option (c) describes nutrient uptake, and option (d) relates to gas exchange in aquatic organisms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of metamorphosis observed in amphibians like tadpoles transitioning to frogs primarily involves changes in: (a) The size and shape of their bones (b) The development of specialized feeding structures (c) The transformation of larval tissues into adult adult forms (d) Increased metabolic rate
सही उत्तर: ग) (c) The transformation of larval tissues into adult adult forms
Metamorphosis in amphibians involves a dramatic reorganization of the animal’s body plan. Specifically, larval tissues are replaced by adult tissues and organs, resulting in significant changes to their morphology. Options (a), (b), and (d) relate to other physiological adaptations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the role of platelets in mammalian blood? (a) They transport oxygen throughout the body (b) They are responsible for antibody production (c) They play a crucial role in blood clotting and hemostasis (d) They regulate blood glucose levels
सही उत्तर: ग) (c) They play a crucial role in blood clotting and hemostasis
Platelets, or thrombocytes, are essential for initiating blood clot formation when a blood vessel is damaged. This process, known as hemostasis, prevents excessive bleeding. Options (a), (b), and (d) describe the functions of other blood cells or hormones.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of goblet cells found in the human small intestine is to: (a) Secrete digestive enzymes (b) Produce mucus for lubrication and protection (c) Absorb nutrients from digested food (d) Transport blood to the intestinal lining
सही उत्तर: ख) (b) Produce mucus for lubrication and protection
Goblet cells are specialized epithelial cells that secrete mucus. This mucus protects the lining of the small intestine from damage caused by acidic chyme and enzymes, while also facilitating nutrient absorption. Option (a) is incorrect as digestive enzymes are secreted by other cell types; option (c) describes the function of absorptive cells, and option (d) represents blood vessels.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform rod of length L is balanced on a smooth fulcrum. The center of mass of the rod lies at a distance x from the fulcrum. If the rod is tilted slightly, the magnitude of the torque due to the gravitational force acting on the rod increases. What is the relationship between x and L? (Assume g = 9.8 m/s²)
सही उत्तर: ग) x = L/4
The torque due to gravity depends on the force of gravity acting at the center of mass and the perpendicular distance from the fulcrum. When the rod is balanced, the center of mass is at x. If the rod tilts, this distance changes, and consequently, the torque increases. L/3 gives the correct balance point in terms of its length.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A particle is moving with a velocity v at an angle θ to the horizontal. It experiences air resistance given by F = -kv, where k is a constant. If the particle comes to rest after a distance d, what is the relationship between v, θ, and k? (Assume g = 9.8 m/s²)
सही उत्तर: घ) θ = 45° and k > 0
The air resistance opposes the motion of the particle. For the particle to come to rest, the net force acting on it must be zero. This implies that the component of the velocity in the direction of the air resistance must be zero. Analyzing this condition reveals a relationship between θ and k. The other options don’t account for the balance of forces required for terminal velocity.
💬 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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