चिकित्सा शिक्षा आयोग (CEE) बीएस्सी नर्सिङ र बीएनएस प्रवेश तयारी
चिकित्सा शिक्षा आयोग (CEE) – बीएस्सी नर्सिङ र बीएनएस प्रवेश
B.Sc. Nursing & BNS 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 pH of a 0.01 M aqueous solution of acetic acid (CH₃COOH) is measured to be 3.76. What is the value of Ka for acetic acid?
सही उत्तर: क) 1.8 x 10⁻⁵
Acetic acid is a weak monoprotic acid. The pH value indicates that the concentration of H⁺ ions is significantly lower than the initial concentration of acetic acid, suggesting Ka is relatively large. Option C (3.0 x 10⁻³) is incorrect as it's far too high for a pH of 3.76, while options B and D are also magnitudes off.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Six points are arranged in a line. If the arrangement is A, B, C, D, E, F, what is the next term in the series?
सही उत्तर: घ) J
This question is based on sequence continuation. The given pattern is simply incrementing the letters alphabetically. Therefore, after 'F', the next letter would be 'G'. The other options are incorrect as they do not follow this basic alphabetical progression.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A transformer has 100 primary turns and 200 secondary turns. If the voltage in the primary coil changes from 200 V to 400 V, what is the new voltage in the secondary coil?
सही उत्तर: घ) 400 V
In a transformer, the ratio of turns is directly proportional to the ratio of voltages. Therefore: V₂/V₁ = N₂/N₁. Substituting the values: 400 V / 200 V = 200 / 100, which simplifies to 2 = 2, confirming that the secondary voltage is indeed 400V.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A force F is applied to a block of mass m over a distance d. The work done by the force is given by:
सही उत्तर: ग) Work = Fd
The work done by a constant force acting over a displacement is calculated using the formula Work = Force × Distance. The sine of the angle between the force and the distance is not a factor here, assuming the force is applied directly along the direction of motion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A light ray is incident on a rectangular glass slab with thickness 't' and refractive index 'n'. If the angle of incidence is 'θ', what is the angle of refraction (r) inside the slab?
सही उत्तर: क) r = θ
The angle of refraction is determined by Snell's Law: n₁sin(θ) = n₂sin(r), where n₁ is the refractive index of air (approximately 1) and n₂ is the refractive index of glass ('n'). Option 'r = θ + 90°' suggests a reflection scenario, which isn't the case here. Option 'r = 2θ' involves complex calculations and isn’t directly derived from Snell’s Law.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of secondary growth in woody plants, characterized by the lateral addition of vascular and cork tissues, is primarily driven by: (a) Cell division within the cambium. (b) Differentiation of xylem cells. (c) Activity of the apical meristems. (d) Accumulation of starch in storage organs.
सही उत्तर: ख) (b) Differentiation of xylem cells.
Secondary growth depends on the activity of the vascular cambium, a layer of meristematic cells that divides to produce new xylem and phloem. Option (b) describes primary xylem development; (c) refers to apical meristems’ role in primary growth, and (d) concerns carbohydrate storage. The cambium is responsible for secondary growth.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the role of palisade cells in a leaf? (a) They provide structural support to the leaf. (b) They are responsible for gaseous exchange. (c) They carry out photosynthesis. (d) They absorb water from the soil.
सही उत्तर: ग) (c) They carry out photosynthesis.
Palisade cells are tightly packed and arranged perpendicularly to the leaf surface – this maximizes light absorption for photosynthesis. Option (a) describes collenchyma; (b) refers to mesophyll cells’ role in gas exchange; and (d) relates to root cell function. The correct answer aligns with their primary photosynthetic responsibility.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The presence of starch grains within the cells of a plant’s root nodules primarily indicates: (a) Increased nitrogen uptake (b) Enhanced oxygen diffusion (c) A symbiotic relationship with nitrogen-fixing bacteria (d) Increased water absorption
सही उत्तर: ग) (c) A symbiotic relationship with nitrogen-fixing bacteria
Root nodules of leguminous plants house nitrogen-fixing bacteria. These bacteria convert atmospheric nitrogen into ammonia, a usable form for the plant. Starch is a product of photosynthesis and accumulates in cells involved in carbohydrate storage, reflecting the plant’s reliance on these bacterial partners for nutrition. Option (a) reflects simple nitrogen uptake; (b) concerns oxygen diffusion; and (d) refers to water absorption.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes photoperiodism? (a) It is a response to changes in temperature. (b) It is a response to changes in light intensity. (c) It is a response to changes in day length. (d) It is a response to changes in soil moisture.
सही उत्तर: ग) (c) It is a response to changes in day length.
Photoperiodism is the physiological reaction of plants to the relative lengths of night and day. Option (a) refers to thermoperiodism; (b) describes light intensity sensitivity, and (d) relates to soil moisture stress. Option (c) accurately defines photoperiodism based on day length as a key environmental cue for plant development.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process by which water moves through a plant from areas of high concentration to low concentration is called: (a) Translocation (b) Osmosis (c) Capillary action (d) Diffusion
सही उत्तर: ख) (b) Osmosis
Osmosis is the movement of water across a semi-permeable membrane from an area of high water potential (high concentration) to an area of low water potential (low concentration). Option (a) describes translocation of nutrients, (c) capillary action involves liquid movement in narrow tubes and (d) diffusion is the movement of molecules from an area of higher concentration to lower. This aligns with standard botanical definitions.
💬 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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