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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Compared with the wet process, the dry process of cement manufacture:
सही उत्तर: ग) Consumes less fuel because no slurry water has to be evaporated
In the dry process the raw meal is dry, so less heat is needed than for evaporating water from slurry in the wet process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The minimum compressive strength of a first-class brick is generally taken as:
सही उत्तर: घ) 10.5 N/mm²
First-class bricks are expected to have a crushing strength of at least about 10.5 N/mm² (105 kg/cm²).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Good building bricks should not absorb more than what percentage of water by weight after 24 hours of immersion?
सही उत्तर: घ) 20%
First-class bricks should have water absorption not exceeding about 20% of their dry weight (24 hour immersion).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The traditional (non-modular) brick size commonly used in Nepal is approximately:
सही उत्तर: ख) 230 mm × 115 mm × 57 mm
Traditional bricks are roughly 9 in × 4.5 in × 2.25 in, i.e., about 230 × 115 × 57 mm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the manufacture of Portland cement, the raw materials fuse into clinker in the rotary kiln at a temperature of about:
सही उत्तर: ग) 1400°C to 1500°C
The burning zone of a cement kiln reaches about 1400–1500°C, where partial fusion forms clinker.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fly ash used in concrete is a by-product of:
सही उत्तर: ग) Coal-fired thermal power plants
Fly ash is the fine ash collected from coal combustion gases in thermal power plants.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 2386, a flaky aggregate is one whose least dimension (thickness) is less than:
सही उत्तर: क) 0.6 times its mean dimension
Particles thinner than 0.6 × mean size are classed as flaky.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The toughness of coarse aggregate (resistance to impact) is determined by the:
सही उत्तर: क) Aggregate impact value test
The aggregate impact test measures resistance to sudden shock.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Bitumen is obtained by:
सही उत्तर: ख) Fractional distillation of crude petroleum
Bitumen is a residue of crude oil distillation; tar comes from destructive distillation of coal or wood.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The thinner most commonly used in oil paints is:
सही उत्तर: घ) Turpentine
Turpentine thins oil paint and evaporates after application.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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