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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Slate is formed by the metamorphism of:
सही उत्तर: क) Shale
Shale (a clayey sedimentary rock) metamorphoses into slate, which splits into thin sheets.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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White cement is manufactured from raw materials that are practically free from:
सही उत्तर: क) Iron oxide
Iron oxide imparts grey colour, so white cement uses raw materials (e.g. china clay, pure limestone) with very little iron oxide.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Rocks formed by the solidification of molten magma are called:
सही उत्तर: ख) Igneous rocks
Igneous rocks such as granite and basalt form from cooling and solidification of magma or lava.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a field test of bricks for soundness?
सही उत्तर: ग) Two bricks struck together should give a clear ringing sound
Sound bricks produce a clear metallic ringing sound when struck together and should not break.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Bull's trench kiln used for burning bricks is an example of a:
सही उत्तर: ग) Continuous kiln
The Bull's trench kiln operates continuously, with burning moving progressively around the trench; clamps and intermittent kilns are batch processes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A brick cut lengthwise so that it is half as wide as a full brick is called a:
सही उत्तर: घ) Queen closer
A queen closer is a brick cut along its length to half width; a bat is a brick cut across its length.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The depression provided on the face of a brick, which helps form a key for mortar, is called the:
सही उत्तर: ख) Frog
The frog is the indentation on the top face of a brick that holds mortar and improves bond.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The two main types of raw materials used in the manufacture of Portland cement are:
सही उत्तर: ख) Calcareous (limestone) and argillaceous (clay or shale)
Cement is made by burning a mix of calcareous material (lime source) and argillaceous material (silica and alumina source).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The presence of lumps of lime (lime nodules) in brick earth is harmful because:
सही उत्तर: घ) Quicklime formed during burning slakes on wetting and causes bricks to split
Lime lumps turn to quicklime on burning; on contact with moisture they slake and expand, disintegrating the brick.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Excess of which constituent in brick earth causes bricks to crack and warp on drying?
सही उत्तर: ग) Alumina (clay)
Alumina gives plasticity, but too much makes bricks shrink, crack and warp during drying and burning.
💬 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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