इन्जिनियरिङ सेवा सिभिल इन्जिनियर (सातौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सिभिल इन्जिनियर (सातौँ तह)
Civil Engineer – 7th Level · Engineering Service
५०३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
The specific gravity of Ordinary Portland Cement is about:
सही उत्तर: ग) 3.15
OPC has a specific gravity of about 3.15; 2.65 is typical for aggregates.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The standard (normal) consistency of cement is determined with a Vicat apparatus using a plunger of diameter:
सही उत्तर: घ) 10 mm
Normal consistency uses the 10 mm diameter Vicat plunger penetrating to 5–7 mm from the bottom of the mould.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
As per IS, the final setting time of Ordinary Portland Cement should not be more than:
सही उत्तर: घ) 600 minutes
IS limits the final setting time of OPC to a maximum of 600 minutes (10 hours).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The specific surface of cement is determined by:
सही उत्तर: घ) Blaine's air permeability apparatus
Blaine's apparatus measures fineness as specific surface (m²/kg).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
For OPC, the residue on a 90 micron IS sieve in the dry sieving fineness test should not exceed:
सही उत्तर: ख) 10%
IS specifies a maximum of 10% residue on the 90 µm sieve for OPC.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which compound of cement mainly contributes to strength gain at later ages (after about 28 days)?
सही उत्तर: घ) C2S (dicalcium silicate)
C2S hydrates slowly and is responsible for the progressive later-age strength.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which compound of cement liberates the maximum heat of hydration?
सही उत्तर: घ) C3A (tricalcium aluminate)
C3A reacts most rapidly with water and gives the highest heat of hydration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Sulphate resisting cement is characterised by a low content of:
सही उत्तर: क) C3A (tricalcium aluminate)
C3A reacts with sulphates to form expansive compounds, so it is kept low.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Low heat cement is most suitable for:
सही उत्तर: घ) Mass concrete works such as dams
Its low heat of hydration reduces thermal cracking in large concrete masses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Rapid hardening cement gains strength faster than OPC mainly because of:
सही उत्तर: ग) Higher C3S content and finer grinding
More C3S and greater fineness speed up hydration and early strength gain.
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।