निर्माण सामग्री – Construction Materials MCQ
निर्माण सामग्री – सिभिल इन्जिनियरिङ
Construction Materials · Civil Engineering · १,००८ प्रश्न
१,००८ प्रश्न उपलब्ध। मोड छान्नुहोस्:
निर्माण सामग्री: 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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Grout is:
सही उत्तर: क) A fluid mixture of cement (and sometimes sand) with water, used to fill cracks, voids and joints
Grout is made fluid enough to flow into and fill narrow spaces.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mud mortar, still common in rural stone masonry in Nepal, has the main drawback that it:
सही उत्तर: घ) Has low strength and loses strength when wet
Mud mortar is cheap but weak, erodes and softens with water, making such walls vulnerable in earthquakes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A rapid-curing (RC) cutback bitumen is prepared by dissolving bitumen in:
सही उत्तर: ग) A highly volatile solvent such as gasoline (naphtha)
RC cutbacks use naphtha or gasoline; medium-curing ones use kerosene and slow-curing ones use light oils.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A paving bitumen of penetration grade 80/100 is one whose:
सही उत्तर: ख) Penetration value lies between 80 and 100 (in units of 0.1 mm)
Penetration grades are named after the range of penetration of the standard needle at 25°C.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Asphalt, as used in road and damp-proofing works, is:
सही उत्तर: क) A mixture of bitumen with inert mineral matter
Asphalt is bitumen combined with mineral matter (natural or man-made).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Geotextiles used in road and drainage works mainly perform the functions of:
सही उत्तर: घ) Separation, filtration, drainage and reinforcement of soil
Permeable geosynthetic fabrics separate soil layers, filter fines, carry water and reinforce soil.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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FRP sheets and wraps used for strengthening structures are made of:
सही उत्तर: ग) Fibres such as glass or carbon embedded in a polymer resin
FRP means fibre reinforced polymer, a composite of strong fibres in a polymer matrix.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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PVC, widely used for pipes and window frames, stands for:
सही उत्तर: ख) Polyvinyl chloride
PVC is polyvinyl chloride, a thermoplastic polymer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The minimum percentage elongation of mild steel of grade E250 (Fe 250) is about:
सही उत्तर: क) 23%
Mild steel of grade E250 must show an elongation of about 23%, much higher than high-strength bars.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Lead (flint) glass, which contains lead oxide, is used for optical items and radiation shielding windows because it has:
सही उत्तर: घ) High refractive index and high density
Lead oxide raises the refractive index and density, giving brilliance and good absorption of radiation.
💬 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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