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 titration of a monoprotic acid with a strong base will exhibit a steep change in pH near which point?
सही उत्तर: घ) At the beginning of the titration
The sharpest change in pH during a titration of a weak acid with a strong base occurs at or very near the endpoint when the equivalence point is reached. This is because the concentration of the acid and base are changing rapidly as they approach complete neutralization. The other options represent periods where the pH change is less pronounced.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following compounds exhibits hydrogen bonding? (a) Methane (CH₄) (b) Ethanol (C₂H₅OH) (c) Carbon dioxide (CO₂) (d) Water (H₂O)
सही उत्तर: घ) (d) Water (H₂O)
Water (H₂O) exhibits hydrogen bonding due to the highly polar nature of the O-H bond, allowing for strong intermolecular forces. Methane has only weak London dispersion forces, carbon dioxide is nonpolar, and ethanol has weaker hydrogen bonding than water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process by which a single cell divides into two identical daughter cells is called: (A) Meiosis (B) Fertilization (C) Mitosis (D) Replication
सही उत्तर: घ) (D) Replication
Mitosis is a type of cell division that results in two genetically identical daughter cells from a single parent cell. Meiosis produces gametes with half the number of chromosomes; fertilization involves fusion of gamete nuclei; replication refers to DNA duplication.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following correctly describes the function of the lateral line system in fish? (A) Detection of light intensity (B) Maintenance of buoyancy (C) Sensing vibrations and pressure changes in water (D) Hearing underwater sounds
सही उत्तर: घ) (D) Hearing underwater sounds
The lateral line system is a sensory organ found in fish that detects hydrodynamic disturbances (vibrations and pressure gradients) in the surrounding water. This allows them to sense prey, predators, and navigate. Light detection, buoyancy regulation, and hearing are not functions of this system.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of budding in yeast is an example of: (A) Mitosis (B) Meiosis (C) Asexual reproduction (D) Sexual reproduction
सही उत्तर: घ) (D) Sexual reproduction
Budding is a form of asexual reproduction where a new organism develops as an outgrowth or bud from the parent. Mitosis involves cell division for growth and repair; meiosis produces gametes during sexual reproduction; sexual reproduction requires fusion of gametes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements best describes the function of platelets in blood? (A) Transporting oxygen from lungs to tissues (B) Initiating blood clotting (C) Producing red blood cells (D) Maintaining a constant body temperature
सही उत्तर: ख) (B) Initiating blood clotting
Platelets are crucial for hemostasis (blood clotting). They aggregate at the site of injury and release factors that initiate the cascade of events leading to clot formation. Options A, C, and D represent functions of red blood cells, bone marrow, and thermoregulation respectively.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The highest degree of cephalization is observed in: (A) Roundworms (B) Annelids (C) Chordates (D) Arthropods
सही उत्तर: ग) (C) Chordates
Chordates exhibit the highest degree of cephalization, meaning a greater concentration of nervous tissue and sensory organs at the head. Roundworms (annelids are segmented worms, arthropods have exoskeletons and segmented bodies, but lack this extreme concentration). Cephalization is key to complex behavior and rapid response to stimuli.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The phenomenon of 'geinardia' in grass leaves, where a large, empty, colorless epidermal cell rolls inward, creating a channel, occurs due to: a) Increased water uptake. b) Cell division leading to new leaf formation. c) Abnormal cell expansion and subsequent rupture. d) The accumulation of pigments
सही उत्तर: घ) d) The accumulation of pigments
Geinardia is the result of an abnormal cell’s uncontrolled enlargement – eventually it ruptures, creating a channel. Options a and d are related to other processes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In *Pinus* cones, pollination occurs before: a) Gametophyte generation. b) Sporophyte generation. c) Seed germination. d) Bud development.
सही उत्तर: ख) b) Sporophyte generation.
Pollination in coniferous plants like pine ( *Pinus*) precedes the development of gametophytes (male and female cones) – this is the characteristic feature of their reproductive cycle. Options c and d relate to subsequent events.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The phenomenon of 'crinkling' or rolling inward of leaf segments in plants like *Opuntia* is primarily due to: a) Increased production of chlorophyll. b) Accumulation of starch within the cells. c) Expansion of epidermal cells and increased turgor pressure. d) Formation of new vascular tissues.
सही उत्तर: घ) d) Formation of new vascular tissues.
The crinkling is caused by the expansion of the epidermal cells due to turgor pressure pushing them outwards, resulting in the characteristic rolling inward movement. Options a and b relate to other physiological processes.
💬 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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