सिभिल इन्जिनियरिङ

सिभिल इन्जिनियरिङ: प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

सही: ० / ०

2801. In cement manufacture, the cooled clinker is finally:

      कBurnt again with coal खGround with a small quantity of gypsum in a ball (tube) mill गMixed with water and stored as slurry घWashed to remove lime
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2802. Wire-cut bricks are produced by:

      कExtruding a continuous column of stiff clay through a die and cutting it into bricks with wires खHand moulding in sanded moulds गPressing dry clay powder at high pressure घCasting liquid clay in moulds
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2803. Glazier's putty, used to fix glass panes in wooden frames, is a mixture of:

      कCement and sand खLime and surkhi गPlaster of Paris and water घWhiting (powdered chalk) and linseed oil
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2804. Shellac, used for knotting and in French polish, is a resin obtained from:

      कPine trees खCoal tar गThe secretion of the lac insect घPetroleum
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2805. Mastic asphalt, used for damp-proof courses and waterproofing flat roofs, is:

      कA water-based emulsion paint खA mixture of bitumen with fine mineral filler and aggregate that forms a dense, voidless, impermeable mass when laid hot गA cutback bitumen घBitumen-impregnated felt only
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2806. A small amount of alkalis in brick earth acts as a flux during burning, but an excess of alkalis causes:

      कMelting and distortion of bricks during burning, and efflorescence in the finished bricks खVery high compressive strength गUniform red colour घExcessive porosity
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2807. As per IS 456, concrete of grades M10 to M20 is classified as:

      कStandard concrete खHigh strength concrete गOrdinary concrete घLean concrete only
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2808. When an aggregate is found to be potentially alkali-reactive, a common precaution is to:

      कIncrease the cement content खUse low-alkali cement or replace part of the cement with a pozzolana such as fly ash गUse sea water for mixing घAdd calcium chloride
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2809. Class F fly ash (as per ASTM C618) is:

      कA low-calcium fly ash, usually from burning bituminous or anthracite coal, with mainly pozzolanic properties खA high-calcium fly ash with self-cementing properties गAsh from burning rice husk घGround blast furnace slag
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2810. The pozzolanic reaction in concrete containing fly ash or silica fume is the reaction between:

      कGypsum and C3A खWater and aggregates गCement and sand घReactive silica of the pozzolana and calcium hydroxide released by cement hydration, forming additional C-S-H
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।