CTEVT स्वास्थ्य प्रवेश PCL नर्सिङ र HA प्रवेश तयारी
CTEVT स्वास्थ्य प्रवेश – PCL नर्सिङ र HA प्रवेश
CTEVT PCL Nursing & HA · CTEVT Health Entrance
१,६३७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CTEVT स्वास्थ्य 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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Photosynthesis takes place in which cell organelle?
सही उत्तर: घ) Chloroplast
Chloroplasts contain chlorophyll, which traps sunlight for photosynthesis. Mitochondria carry out respiration, not photosynthesis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The cell wall of plant cells is mainly made of:
सही उत्तर: क) Cellulose
Plant cell walls are made of cellulose, a polysaccharide. Chitin forms the cell wall of fungi and the exoskeleton of insects.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which cell organelle is called the 'suicide bag' of the cell?
सही उत्तर: ख) Lysosome
Lysosomes contain digestive enzymes; if they burst, they can digest the cell itself. Mitochondria are the powerhouse of the cell.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Protein synthesis in a cell takes place in:
सही उत्तर: क) Ribosomes
Ribosomes are the site of protein synthesis. They are found free in cytoplasm or attached to rough endoplasmic reticulum.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The percentage of nitrogen in urea, CO(NH₂)₂, is about (C = 12, O = 16, N = 14, H = 1):
सही उत्तर: ख) 46.7%
Molar mass of urea = 12 + 16 + 2(14 + 2) = 60, of which nitrogen is 28. So %N = 28/60 × 100 ≈ 46.7%.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Isotopes of an element have:
सही उत्तर: ख) Same atomic number but different mass numbers
Isotopes have the same number of protons but different numbers of neutrons, e.g. protium, deuterium and tritium. Atoms with the same mass number but different atomic numbers are isobars.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Temporary hardness of water is caused by bicarbonates of:
सही उत्तर: ग) Calcium and magnesium
Calcium and magnesium bicarbonates cause temporary hardness, which can be removed by boiling. Their chlorides and sulphates cause permanent hardness.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The molecular formula of ozone is:
सही उत्तर: क) O₃
Ozone is made of three oxygen atoms. The ozone layer in the stratosphere absorbs harmful ultraviolet rays.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Nitrous oxide (N₂O), used as an anaesthetic, is commonly known as:
सही उत्तर: ख) Laughing gas
N₂O is called laughing gas because inhaling it can cause euphoria. Marsh gas is methane.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the Haber process for manufacturing ammonia, the catalyst used is:
सही उत्तर: ख) Iron
Ammonia is made from nitrogen and hydrogen over a finely divided iron catalyst. Vanadium pentoxide is used in the contact process for sulphuric acid.
💬 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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