Description : Pozzolana (or surkhi) is used in lime (A) To impart hydraulicity (B) To prevent shrinkage (C) To decrease the cost of construction (D) To decrease the setting time
Last Answer : Answer: Option A
Description : The presence of sand in brick earth prevents: (A) Cracking of bricks (B) Shrinkage of bricks (C) Warping of bricks (D) None of these
Last Answer : Answer: Option C
Description : Indicate which of the statement is incorrect (a) The detritus tank is type of a grit chamber (b) In detritus tank, velocity of flow is further reduced (c) Grit chambers are provided in the sewage ... to remove the heavier inorganic matter as grit, sand etc. from the sewage (d) None of them*
Last Answer : (d) None of them*
Description : Shrinkage volume in cement setting does not depend upon the (A) Sand to cement ratio (B) Water to cement ratio (C) Ambient temperature fluctuation (D) Drying period
Last Answer : (A) Sand to cement ratio
Description : The numerical difference between the liquid limit and plastic limit of a soil is known as a) Liquidity index b) Plasticity index * c) Shrinkage index d) Consistency index
Last Answer : b) Plasticity index *
Description : The minimum water content at which a reduction in water content will not cause a decrease in the volume of a soil mass is known as a) Plastic limit b) Shrinkage limit* c) Liquid limit d) Consistency limit
Last Answer : b) Shrinkage limit*
Description : Minimum steel required in slabs is mainly controlled by the following consideration [ A ] Cracking on the tension side [ B ] Shrinkage and creep [ C ] Both (a) and (b) [ D ] None of the above.
Last Answer : [ B ] Shrinkage and creep
Description : Soundness test of cement is done to determine its a) Durability in seawater b) Free lime content* c) Iron oxide content d) Alumina content
Last Answer : b) Free lime content*
Description : The commonly used lime in white washing is a) Hydraulic lime b) Slaked lime c) Plain lime d) White lime*
Last Answer : d) White lime*
Description : Hydraulic lime is not used in plastering because it may result in a) Blistering* b) Efflorescence c) Flaking d) Fluorescence
Last Answer : a) Blistering*
Description : Which of the following constituents impart plasticity to brick earth a) Alumina* b) Silica c) Lime d) Magnesia
Last Answer : a) Alumina*
Description : The main ingredients of Portland cement are a) Lime and silica* b) Lime and Alumina c) Alumina magnesia d) Silica and Alumina
Last Answer : a) Lime and silica*
Description : Which of the following lime can set under water also a) Fat Lime b) Lean lime* c) Hydraulic line d) Quick lime
Last Answer : b) Lean lime*
Description : The lime which contains mainly calcium oxide and slacks with water, is known as a) Fat lime b) Quicklime* c) Hydraulic lime d) Poor line
Last Answer : b) Quicklime*
Description : Le Chatelier apparatus is used to determine which of the following properties for cement A) Soundness* b) Initial setting time c) Compressive strength d) Tensile strength
Last Answer : A) Soundness*
Description : What is the Life of luting sand ? (i) No defined * (ii) 6 months (iii) 9 months
Last Answer : (i) No defined *
Description : The constituent of cement which act as Binders are a) Sand and silica b) Silica and carbon c) tricalcium silicate dicalcium silicate and carbon d) tricalcium aluminate,dicalcium silicate and tricalcium silicate *
Last Answer : d) tricalcium aluminate,dicalcium silicate and tricalcium silicate *
Description : The bulking of sand with 2% moisture content is about a) 5% b) 10% c) 15%* d) 20%
Last Answer : c) 15%*
Description : Quicksand is a) Moist sand containing a small percentage of clay b) Is a condition which generally occurs in coarse sands c) Is a condition in which cohesive properties of soil increase rapidly d) Is a condition in which a cohesion less soil loses its strength because of upward flow of water
Last Answer : d) Is a condition in which a cohesion less soil loses its strength because of upward flow of water
Description : Surface preparation for Metallising the abrasives used for final cleaning is a) Chilled iron grit G.24, as defined in BS : 2451 b) Washed salt free angular silica sand of mesh size 12 to 30 with a minimum of 40% retained on a 20 mesh c) either (a) or (b) * d) d) neither (a) or (b)
Last Answer : c) either (a) or (b) *
Description : In setting up a plane table at any station (a) Leveling is done first (b) Centering is done first (c) Both leveling and centering are done simultaneously * (d) Orientation is done first
Last Answer : c) Both leveling and centering are done simultaneously *
Description : Dumpy level is most suitable when (a) The instrument is to be shifted frequently (b) Fly leveling is being done over long distance (c) Many readings are to be taken from a single setting of the instrument* (d) All of the above
Last Answer : (c) Many readings are to be taken from a single setting of the instrument*
Description : By 00 probe in AT weld testing with normal gain setting. (i) Area below N.axis can be tested. (ii) Area below N.axis can not be tested.* (iii) Only web below N.axis can be tested. (iv) All above are correct.
Last Answer : (ii) Area below N.axis can not be tested.*
Description : A slow setting cement will have higher percentage of a) tricalcium aluminate b) tricalcium silicate c) Gypsum d) Dicalcium silicate*
Last Answer : C2s
Description : The setting and hardening of cement after addition of water is due to a) Binding action of water b) Evaporation of water c) Hydration and hydrolysis of some constituent compounds of cement* d) Additional hardening compounds added to cement
Last Answer : c) Hydration and hydrolysis of some constituent compounds of cement*
Description : Which type of following cement is used for mass concrete work a) High Alumina cement b) Quick setting cement c) Rapid hardening cement d) Low heat cement*
Last Answer : d) Low heat cement*
Description : The Most common admixture used to accelerate the initial setting of concrete is a) Gypsum b) Calcium chloride* c) Calcium carbonate d) Calcium bicarbonate
Last Answer : b) Calcium chloride*
Description : Shelf life of Paint aluminium when paste and oil are mixed a) Oneday* b) 1 year c) 6 month d) None of the above
Last Answer : a) Oneday*
Description : Shelf life of Paint Red Oxide Ready mixed (IS : 123) a) 4 month b) 1 year* c) 6 month d) None of the above
Last Answer : b) 1 year*
Description : The effect of adding calcium chloride in concrete is (i) To increase shrinkage (ii) To decrease shrinkage (iii) To increase setting time (iv) To decrease setting time The correct answer is (A) (i) and (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)
Last Answer : (B) (i) and (iv)
Description : Insufficient washing of sand grains in a rapid sand filter causes (A) Air binding (B) Shrinkage of filtering media (C) Mud balls (D) Expansion of filtering media
Last Answer : (C) Mud balls
Description : Pick up the correct statement from the following: (A) Sand stones may be divided into calcareous, siliceous and ferruginous sand stones (B) Concrete using sand stones, cracks due to excessive shrinkage (C) Broken bricks produce a concrete having good fire resisting qualities (D) All the above
Last Answer : Answer: Option D
Description : To provide inverted filter to improve the hearing capacity of soil the plasticity index of blanketing material should not be greater than a) 15* b) 20 c) 27 d) 35
Last Answer : a) 15*
Description : To provide inverted filter to improve the bearing capacity of soil the liquid limit of blanketing material should not be greater than a) 5 b) 20 c) 27 d) 35
Last Answer : d) 35
Description : Shrinkage in concrete can be reduced by using (A) Low water cement ratio (B) Less cement in the concrete (C) Proper concrete mix (D) All the above
Description : Shrinkage in concrete can be reduced by using (i) Low water cement ratio (ii) More amount of cement in the concrete (iii) Presaturated aggregates [ A ] i [ B ] i and ii [ C ] i and iii [ D ] i, ii and iii
Last Answer : [ C ] i and iii
Description : Main advantage of 3-piece P F Mould is? (i) To overcome fin defect.* (ii) To prevent the flaw of molten metal (iii) To make proper weld size (iv) None to the above
Last Answer : (i) To overcome fin defect.*
Description : fehe guard rail is provided in bridges to a) prevent derailment in bridges b) prevent falling of vehicles during derailment* c) have good riding d) guide the wheels
Last Answer : b) prevent falling of vehicles during derailment*
Description : If our physical appearance never changed past a certain age, yet we continued to age normally, how would this visual perception effect the world? or you?
Last Answer : People would be surprised when you dropped dead of old age or behaved in a senile fashion. Besides, with enough plastic surgery your fantasy is real today.
Description : The main function of alumina in brick earth is (A) To impart plasticity (B) To make the brick durable (C) To prevent shrinkage (D) To make the brick impermeable
Description : The object of curing is to (a) Prevent the loss of water by evaporation. (b) Reduce the shrinkage of concrete (c) Preserve the properties of concrete (d) All of these
Last Answer : (d) All of these
Description : Minimum shear reinforcement is necessary to [ A ] Prevent brittle shear failure [ B ] Prevent failure due to shrinkage and thermal stresses [ C ] Hold the reinforcements in place while pouring concrete [ D ] All the above.
Last Answer : [ D ] All the above.
Description : Fly ash when added to concrete [ A ] Acts as aggregates [ B ] Acts as pozzolona [ C ] Improves appearance [ D ] Reduces setting time
Last Answer : [ B ] Acts as pozzolona
Description : How to prevent foot cracking ? Winter really breaks legs. It cracks under all the toes which makes it difficult to walk. What can I do now ??
Last Answer : : You buy Xfin cream. Apply it under your fingers regularly at night. Keep feet clean at all times. Use sandals. Do not go to the mud , eat foods rich in vitamins. Eat vegetables. I hope you will benefit from using the following cream for 3/4 days InshaAllah.
Description : . Plasticisers are added to paints to (A) Make it corrosion resistant (B) Make glossy surface (C) Give elasticity & prevent cracking of the film (D) Increase atmospheric oxidation
Last Answer : (C) Give elasticity & prevent cracking of the film
Description : Why it is sometimes necessary to preheat the base material before welding? a) To remove oil and grease b) To remove moisture from inside the material c) To prevent the possible risk of cracking d) Not required if using cellulosic electrodes as these will provide enough heat
Last Answer : c) To prevent the possible risk of cracking
Description : With regard to pattern electroretinogram: a. it can be used to estimate the visual acuity b. it is generated by the occipital cortex c. it is reduced in optic nerve diseases d. the signal amplitude is about 10 mV
Last Answer : it is reduced in optic nerve diseases
Description : The initial setting time of hydraulic lime, is (A) 30 minutes (B) 60 minutes (C) 90 minutes (D) 120 minutes
Description : The initial setting time of lime-pozzolana, is (A) 30 minutes (B) 60 minutes (C) 90 minutes (D) 120 minutes
Description : Pick up the correct statement from the following: (A) The lime in excess makes the cement unsound and causes the cement to expand and disintegrate (B) The silica in excess makes the cement stronger ... time also increases (C) The excess amount of alumina weakens the cement (D) All the above