विज्ञान (भौतिक, रसायन, जीव) – Science MCQ
विज्ञान (भौतिक, रसायन, जीव) – CTEVT स्वास्थ्य प्रवेश
Science · CTEVT Health Entrance (PCL & Diploma) · ४११ प्रश्न
४११ प्रश्न उपलब्ध। मोड छान्नुहोस्:
विज्ञान (भौतिक, रसायन, जीव): 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 simple machine lifts a load of 600 N with an effort of 150 N. Its mechanical advantage is:
सही उत्तर: ग) 4
MA = load/effort = 600/150 = 4.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Forceps used in hospitals are an example of which class of lever?
सही उत्तर: ख) Third class (effort between load and fulcrum)
In forceps the effort is applied in the middle, between the fulcrum (joined end) and the load (tips), so they are third-class levers.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The area under a velocity–time graph of a moving body gives its:
सही उत्तर: क) Displacement
Area under a v–t graph = velocity × time = displacement (distance for motion in one direction).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A person with blood group AB is called a universal recipient because:
सही उत्तर: घ) Their plasma has no anti-A or anti-B antibodies
With no anti-A or anti-B antibodies in the plasma, AB persons can receive A, B, AB or O blood without agglutination (ignoring Rh).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During vigorous exercise, anaerobic respiration in human muscles produces:
सही उत्तर: ग) Lactic acid
With too little oxygen, muscle cells convert glucose to lactic acid, which causes muscle fatigue and cramps; yeast instead produces ethanol.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a food chain, producers store 10,000 J of energy. Following the 10% law, how much energy reaches the secondary consumer?
सही उत्तर: ख) 100 J
Only about 10% passes to each next level: 10,000 → 1,000 J (primary consumer) → 100 J (secondary consumer).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The junction between two neurons, across which a nerve impulse passes, is called a:
सही उत्तर: क) Synapse
At a synapse, chemical neurotransmitters carry the impulse from one neuron to the next.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Antibodies in the human body are produced mainly by:
सही उत्तर: घ) B-lymphocytes
B-lymphocytes (via plasma cells) make antibodies; neutrophils mainly engulf germs and platelets help in clotting.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Insulin is secreted by the:
सही उत्तर: ग) Islets of Langerhans of the pancreas
Beta cells of the islets of Langerhans secrete insulin, which lowers blood glucose; its deficiency causes diabetes mellitus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In plants, food prepared in the leaves is transported to other parts by:
सही उत्तर: ख) Phloem
Phloem carries food (sugars) from leaves to other parts, while xylem carries water and minerals upward from the roots.
💬 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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