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4th March 2017 part 2 (In Hindi)
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This lesson contains brief explanation of Question of BUILDING MATERIAL asked in SSC JE -2017 exam. Which was held at 4th March 2017 in afternoon shift.

Seraj Uddin in civil engineering| Cracked BCECE 2012|GATE 2017| owner YouTube channel:- The Master Saheb Teaching is my passion|

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  1. SStaff Selection Commission SSC JE 2017 Exam date-4th March 2017 Afternoon shift Questions with brief explanation

  2. Plaster of Paris is obtained by calcining A) bauxite B) gypsurm C) kankar D) lime stone 2. For the manufacture of Portland cement the proportions of raw material used are A) lime 63%, silica 22%, other ingredients 15% B) lime 22%, silica 63%, other ingredients 15% C) silica 40%, lime 40%, other ingredients 40% D) silica 70%, lime 20%, other ingredients 20%

  3. 3 To retard the initial setting time of cement, the compound responsible is A) Tri-calcium silicate B) Gypsum C) Di-Calcium silicate D) Tri-calcium aluminate 4 Quick setting cement is produced by adding A) less amount of gypsum in very fine powdered form B) more amount of gypsum in very fine powdered form C) aluminium sulphate in very fine powdered form D) pozzolana in very fine powdered form

  4. 5 If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time is A) 0.70P B) 0.75P C) 0.80P D) 0.85P 6 Pick up the correct statement from the following A) Adding 5% to 6% moisture content by weight, increases the volume of dry sand from 18% to 38% B) The bulking of fine sand is more than that of coarse sand C) If the percentage content of moisture exceeds 10%, increase in bulk of sand start increasing D) All options are correct

  5. 7. Strength of cement concrete primarily depends upon A) quality of water B) quantity of aggregate C) quantity of cement D) water - cement ratio The most valuable timber may be obtained from A) chir B) shisham C) sal D) teak

  6. The timber having maximum resistance against white ants is obtained from A) chir B) shisham C) sal D) teak 10 Due to attack of dry rot, the timber A) cracks B) shrinks C) reduces to powder D) none of these

  7. 63 A concrete having a slump of 6.5 cm is said to be A) dry B) earth moist C) semi-plastic D) plastic 64 Concrete is unsuitable for compaction by a vibrator if it is A) dry B) earth moist C) semi-plastic D) plastic

  8. 65. The increased cohesiveness of concrete, makes it A) less liable to segregation B) more liable to segregation C) more liable to bleeding D) more liable for surface scaling in frosty weather After casting, an ordinary cement concrete on drying A) expand B) either expands or shrinks C) shrinks D) none of these

  9. 67 To obtain cement dry powder lime stones and shales or their slurry is burnt in a rotary kiln at a temperature between A) 1100 and 1200 B) 1200 and 1300. C) 1300 and 1400. D) 1400 and 1500 68 The minimum percentage of chemical ingredient of cement is that of A) magnesium oxide B) iron oxide C) alumina D) lime

  10. 69 Pick up the correct proportions of chemical ingredients of cement A) lime: silica: alumina: iron oxide 63:22:6: 3 B) silica:lime: alumina: iron oxide-63:22:6: 3 C) alumina: silica: lime: iron oxide-63:22:6: 3 D) none of these 70 Pick up the correct statement from the following A) lime in excess, causes the cement to expand and disintegrate B) silica in excess, causes the cement to set slowlyy C) alumina in excess, reduces the strength of the cement D) all options are correct

  11. 73 Inert material of of a cement concrete mix is A) water B) cement C) aggregate D) none of these 74. According to lS:383-1963, a good aggregate should be A) chemically Inert B) sufficiently strong C) hard and durable D) all options are correct