Current Affairs

Q.1 Particles of 0.002 mm size are that of

(A)
Q.2Pick up the correct statement from the following:

(D)
Q.3The main object of compaction of concrete, is:

(D)
Q.4 An aggregate is known as cyclopean aggregate if its size is more than

(D)
Q.5The size of fine aggregates does not exceed

(D)
Q.6 If a grading curve is horizontal between the portions of 20 mm. Sieve and 4.75 mm Sieve, the graded aggregates do not contain

(D)
Q.7In the method of voids for determination of the quantity of cement paste, it is assumed that

(D)
Q.8 'Ware house pack' of cement means

(D)
Q.9Le-Chatelier's apparatus is used for testing

(A)
Q.10 The concrete mix which causes difficulty in obtaining a smooth finish, possess

(A)
Q.11 For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is

(A)
Q.12 Pick up the correct statement from the following:

(D)
Q.13Horizontal construction joints in concrete walls are generally provided at

(D)
Q.14 Pick up the correct statement from the following:

(D)
Q.15The bulk density of aggregates, depends upon

(D)
Q.16 The specifications of a cement bag for storage, are

(D)
Q.17The minimum percentage of chemical ingredient of cement is that of

(D)
Q.18 For given workability the grading requiring the least amount of water is one that gives

(B)
Q.19 the full strength of concrete after

(D)
Q.20An excess of flaky particles in concrete aggregates

(D)
Q.21The surface where two successive placements of concrete meet, is known as

(C)
Q.22 Pick up the correct statement from the following:

(A)
Q.23 Curing of pavements, floors, roofs and slabs, is done by

(D)
Q.24Bulking of sand is

(D)
Q.25On a grading curve, the gap grading is represented by

(A)
Q.26 Di-calcium silicate (C2S)

(B)
Q.27 Pick up the correct statement from the following:

(D)
Q.28 The impurity of mixing water which affects the setting time and strength of concrete, is

(A)
Q.29Sand generally contains salt if it is obtained from:

(C)
Q.30 The maximum percentage of chemical ingredient of cement is that of

(D)
Q.31The aggregate impact value of the aggregate used in

(D)
Q.32 Placing of concrete should preferably be done at a temperature of

(B)
Q.33 Pick up the correct statement from the following:

(D)
Q.34A concrete using an air entrained cement

(D)
Q.35 The cement becomes useless if its absorbed moisture content exceeds

(D)
Q.36 The lower water cement ratio in concrete, introduces

(D)
Q.37 Sands of zone I are

(C)
Q.38earth moist

(C)
Q.39 Concrete is unsuitable for compaction by a vibrator if it is

(C)
Q.40An ideal ware house, is provided

(D)
Q.41 For the construction of the retaining structures, the type of concrete mix to be used, is

(D)
Q.42 Pick up the incorrect statement from the following:

(D)
Q.43Vicat apparatus is used for

(D)
Q.44 For the construction of thin R.C.C. structures, the type of cement to be avoided, is

(D)
Q.45 The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

(D)
Q.46a good aggregate should be

(D)
Q.47For preparing ordinary concrete, the quantity of water used, is

(D)
Q.48 If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is

(A)
Q.49 In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm diameter for

(C)
Q.50 Pick up the incorrect statement from the following:

(D)
Q.51The entrained air in concrete

(A)
Q.52If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is

(C)
Q.53Pick up the correct statement from the following:

(D)
Q.54 The shuttering of a hall measuring 4 m x 5 m, can be removed after

(A)
Q.55 The dimensions of a 35 litre forma for measuring aggregates by volume, are :

(C)
Q.56 Setting time of cement increases by adding

(D)
Q.57Higher workability of concrete is required if the structure is

(C)
Q.58 Pick up the incorrect statement from the following:

(D)
Q.59 Pick up the correct statement from the following:

(D)
Q.60 Cement used for normal concrete construction, is obtained by burning a mixture of

(D)
Q.61 Strength of concrete with passage of time

(C)
Q.62 A concrete having a slump of 6.5 cm, is said to be

(B)
Q.63 If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is

(C)
Q.64 For a good concrete

(D)
Q.65Water cement ratio is generally expressed in volume of water required per

(B)
Q.66 If the various concrete ingredients i.e. cement, sand and aggregates are in the ratio of 1:3:6, the grade of concrete, is

(D)
Q.67To prevent segregation, the maximum height for placing concrete, is

(B)
Q.68 A flaky aggregate is said to be elongated if its length is

(D)
Q.69 Ordinary Portland cement is manufactured from

(C)
Q.70Sand requiring a high water cement ratio, belongs to

(D)
Q.71. Pick up the incorrect statement from the following. While performing preliminary test on concrete

(D)
Q.72The process of mixing, transporting, placing and compacting concrete using Ordinary Port land Cement should not take more than

(C)
Q.73The process of mixing, transporting, placing and compacting concrete using Ordinary Port land Cement should not take more than

(C)
Q.74The strength and quality of concrete, depend upon:

(D)
Q.75 Pick up the correct statement from the following:

(D)
Q.76 If the slump of a concrete mix is 60 mm, its workability is

(C)
Q.77Workability improved by adding

(D)
Q.78 Expansion joints are provided if the length of concrete structures exceeds

(C)
Q.79An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than

(B)
Q.80 Pozzolanic properties exist in

(D)
Q.81 If fineness modulus of sand is 2.5, it is graded as

(A)
Q.82 Log Angles machine is used to test the aggregate for

(B)
Q.83 Non-uniform compaction may cause the concrete

(D)
Q.84 If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

(C)
Q.85 Concrete gains strength due to

(C)
Q.86 To hydrate 500kg of cement full water needed, is

(B)
Q.87 Pick up the correct statement from the following:

(D)
Q.88 The commercial name of white and coloured cement is

(D)
Q.89 The aggregate containing moisture in pores and having its suface dry, is known as

(D)
Q.90 For preparing a test-specimen, it is necessary

(D)
Q.91 For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is

(A)
Q.92The type of aggregates of same nominal size, which contain less voids when compacted, are

(C)
Q.93For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

(C)
Q.94The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

(D)
Q.95 The void ratio of

(D)
Q.96 The operation of removing humps and hollows of uniform concrete surface, is known as

(D)
Q.97 For concreting tunnel linings, transportation of concrete is done by

(B)
Q.98 Pick up the incorrect statemnt from the following. For performing compressive strength test of cement

(B)
Q.99While designing an air entrained concrete

(D)
Q.100 Workability of concrete mix with low water cement ratio is determined by

(A)
Q.101 The top diameter, bottom diameter and the height of a slump mould are :

(A)
Q.102 An ordinary Portland cement when tested for its fineness, should not leave any residue on sieve No. 9, more than

(D)
Q.103Concrete containing

(A)
Q.104 To obtain a very high strength concrete, use very fine grained

(C)
Q.105 The most useless aggregate is one whose surface texture is

(D)
Q.106Allowable shear strength of concrete, depends upon

(B)
Q.107 The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is

(D)
Q.108 The bulk density of aggregates, is generally expressed as

(B)
Q.109 High temperature

(B)
Q.110 The condition not applicable to water cement ratio law, is

(B)
Q.111Joints in concrete structures, are provided

(D)
Q.112 Pick up the correct statement from the following:

(D)
Q.113Pick up the incorrect statement applicable to the field test of good cement.

(D)
Q.114Pick up the correct statement from the following:

(D)
Q.115 Pick up the correct statement from the following:

(D)
Q.116 The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

(C)
Q.117The factor which affects workability, is

(D)
Q.118Pick up the correct statement from the following:

(D)
Q.119Saw dust can be rendered chemically inert by boiling it in water containing

(C)
Q.120 Pick up the incorrect statement from the following:

(C)
Q.121According to Water-Cement Ratio Law, the strength of workable plastic concrete

(D)
Q.122 Separation of water or water sand cement from a freshly concrete, is known

(A)
Q.123The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200, is

(A)
Q.124The shrinkage of concrete

(D)
Q.125The diameter of the Vicat plunger is 10 mm and its length varies from

(A)
Q.126 If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed

(C)
Q.127 Efflorescence in cement is caused due to an excess of

(D)
Q.128 Water cement ratio is

(D)
Q.129 Water cement ratio is

(D)
Q.130 Pozzolana cement is used with confidence for construction of

(D)
Q.131Slump test of concrete is a measure of its

(D)
Q.132 Permissible compressive strength of M 150 concrete grade is

(D)
Q.133Pick up the incorrect statement from the following:

(C)
Q.134The datum temperature for maturity by Plowman, is

(B)
Q.135Addition of pozzolana to cement

(D)
Q.136 Segregation is responsible for

(D)
Q.137 Pick up the correct statement from the following:

(D)
Q.138If the depth of moist sand in a cylinder is 15 cm and the depth of the sand when fully inundated with water is 12 cm, the bulking of the moist sand, is

(B)
Q.139 The light weight aggregates are obtained from

(D)
Q.140 Pick up the correct statement from the following:

(D)
Q.141The compaction of concrete, improves

(D)
Q.142A construction joint is provided where

(D)
Q.143The maximum thickness of concrete floor of a cement warehouse, is

(B)
Q.144For an ordinary Portland cement

(D)
Q.145 The internal dimensions of a ware house are 15 m x 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are

(B)
Q.146The final operation of finishing floors, is known as

(B)
Q.147The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

(C)
Q.148Pick up the incorrect statement from the following:

(D)
Q.149An aggregate is said to be flaky, if its least dimension is less than

(C)
Q.150 Specified compressive strengh of concrete is obtained from cube tests at the end of

(D)
Q.151 Specified compressive strengh of concrete is obtained from cube tests at the end of

(D)
Q.152 Pick up the correct statement from the following:

(D)
Q.153Pick up the correct statement from the following:

(D)
Q.154For compacting plain concrete road surface of thickness less than 20 cm, we use

(C)
Q.155Pick up the correct statement from the following:

(D)
Q.156Workability of concrete for a given water content is good if the aggregates, are

(C)
Q.157Proper batching ensures

(D)
Q.158 The process of hardening the concrete by keeping its surface moist is known

(C)
Q.159 For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:

(C)
Q.160 Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is

(A)
Q.161For construction of structures in sea water, the cement generally preferred to, is

(D)
Q.162full strength of concrete after

(D)
Q.163Pick up the incorrect statement from the following:

(C)
Q.164Water required per bag of cement, is

(B)
Q.165The production of impermeable concrete:

(D)
Q.166You are asked to construct a massive dam, the type of cement you will use, is

(A)
Q.167 Pick up the correct statement from the following

(D)
Q.168Batching error means inaccuracy in the quantity of

(D)
Q.169 Pick up the correct statement from the following:

(D)
Q.170 Hardening of cement occurs at

(A)
Q.171Addition of pozzolana to cement causes

(D)
Q.172 Too wet concrete may cause

(D)
Q.173 Addition of pozzolana to ordinary port land cement, causes

(D)
Q.174 Addition of pozzolana to ordinary port land cement, causes

(D)
Q.175Pick up the correct statement from the following:

(D)
Q.176Sieve Nos. 10 mm and 4.75 mm are geneally used for grading of

(C)
Q.177Ordinary concrete is not used for concrete grade

(B)
Q.178 Shrinkage in concrete can be reduced by using

(D)
Q.179Grading of sand causes great variation in

(D)
Q.180the expansion joints

(D)
Q.181Separation of coarse aggregates from mortar during transportation, is known

(C)
Q.182 Construction joints are generally provided in concrete

(D)
Q.183For road pavements, the cement generally used, is

(D)
Q.184 Internal friction between the ingredients of concrete, is decreased by using

(B)
Q.185The rock which is not calcareous, is :

(D)
Q.186 Workability of concrete is measured by

(A)
Q.187 M 150 grade of concrete approximates

(D)
Q.188 Vicat's apparatus is used for

(C)
Q.189Concrete mainly consists of

(C)
Q.190 Pick up the correct statement from the following:

(D)
Q.191Pick up the correct statement from the following:

(D)
Q.192 The high strength of rapid hardening cement at early stage, is due to its

(C)
Q.193Slump test is done for

(B)
Q.194Transport of concrete by pumps, is done for a distance of

(D)
Q.195Pick up the correct proportions of chemical ingredients of cement

(A)
Q.196The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds

(D)
Q.197Pick up the correct statement from the following:

(D)
Q.198The process of proper and accurate measurement of concrete ingredients for uniformity of proportion, is known

(B)
Q.199The process of proper and accurate measurement of concrete ingredients for uniformity of proportion, is known

(B)
Q.200For the construction of cement concrete floor, the maximum permissible size of aggregate, is

(C)
Q.201Curing a concrete for long period ensures better

(D)
Q.202 If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

(C)
Q.203Workability improved by adding

(D)
Q.204Workability improved by adding

(D)
Q.205To ensure constant moisture content in aggregates

(D)
Q.206The ratio of the length to breadth of a wooden float, is

(C)
Q.207The increased cohesiveness of concrete, makes it

(B)
Q.208The following proportion of the ingredients of concrete mix, is not in conformation to arbitrary method of proportioning

(B)
Q.209An aggregate is said to be flaky if its least dimension is less than

(C)
Q.210Construction joints are provided

(D)
Q.211While compacting the concrete by a mechanical vibrator, the slump should not exceed

(D)
Q.212Curing

(D)
Q.213 The bulk density of aggregates does not depend upon :

(A)
Q.214Proper proportioning of concrete, ensures

(D)
Q.215The maximum amount of dust which may be permitted in aggregates is

(D)
Q.216Permissible compressive strength of M 300 concrete grade is

(B)
Q.217 To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

(D)
Q.218.Hydration of cement is due to chemical action of water with

(A)
Q.219After casting, an ordinary cement concrete on drying

(B)
Q.220The risk of segregation is more for

(A)
Q.221 The mixture of different ingredients of cement, is burnt at

(C)
Q.222For ensuring quality of concrete, use

(B)
Q.223M10 grade of concrete approximates

(A)
Q.224If the compaction factor is 0.95, the workability of concrete is

(C)
Q.225Under normal conditions using an ordinary cement, the period of removal of the form work, is

(D)
Q.226For quality control of Portland cement, the test essentially done is

(D)