A steel reinforcement not less than ____ percent of the gross section shall be provided in each principal direction of water tank A. 0.12 B 0.20 C 0.15 D. 0.30
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1. CIVIL ENGINEERING QUESTIONS BY:[email protected] Page 1 CIVIL ENGINEERING COMPETITIVE QUESTIONS S.No. Question 1 Concrete contains (i)Siliceous aggregates, having higher coefficient of expansion (ii)Igneous aggregates, having intermediate coefficient of expansion (iii)Lime stones, having lowest coefficient of expansion [ A ] i and iii [ B ] ii and iii [ C ] i and ii [ D ] i, ii and iii Answer : D 2 Select the incorrect statement [ A ] R.C.C has better fire resistance than steel [ B ] R.C.C. structure is economical than steel structure [ C ] Strength of concrete decreases as age increases [ D ] R.C.C can be used for under water and marine structures Answer : C 3 Water cement ratio is the ratio of [ A ] Water to cement by weight [ B ] Water to cement by volume [ C ] Cement to water by weight [ D ] Cement to water by volume Answer : A 4 Concrete is [ A ] Weak in tension [ B ] Strong in tension [ C ] Strong in both tension and compression [ D ] Weak in compression Answer : A 5 The entrained air in concrete [ A ] Increases the strength [ B ] Decreases the resistance to weathering [ C ] Increases the workability [ D ] Decreases the workability Answer : C
2. CIVIL ENGINEERING QUESTIONS BY:[email protected] Page 2 6 Concrete is unsuitable for compaction by vibration if it is [ A ] Semi – plastic [ B ] Plastic [ C ] Earth moist [ D ] Dry Answer : B 7 The strength and quality of concrete depends upon (i)Grading of aggregates (ii)Shape of aggregates (iii)Surface area of aggregates (iv)Surface texture of aggregates [ A ] i, ii and iv [ B ] ii, iii and iv [ C ] i, iii and iv [ D ] i, ii, iii and iv Answer : D 8 In order to avoid segregation, fresh concrete should be dropped from a height of [ A ] Less than one meter [ B ] Less than two metres [ C ] More than one metre [ D ] More than two metres Answer : A 9 The process of hardening of concrete in the presence of water is called [ A ] Creep [ B ] Hydration [ C ] Shrinkage [ D ] Curing Answer : B 10 The process of keeping the concrete structure moist is called [ A ] Hydration [ B ] Curing [ C ] Creep [ D ] Shrinkage Answer : B 11 The separation of water or water cement mixture from the freshly laid concrete is known as
3. CIVIL ENGINEERING QUESTIONS BY:[email protected] Page 3 [ A ] Workability [ B ] Segregation [ C ] Bleeding [ D ] Creep Answer : C 12 The continuous strain, which the concrete undergoes due to application of external loads is called [ A ] Creep [ B ] Bleeding [ C ] Workability [ D ] Segregation Answer : A 13 The process of conversion of plastic concrete to solid stage is called [ A ] Hydration [ B ] Hardening [ C ] Setting [ D ] Curing Answer : C 14 At 28 days of curing concrete attains a strength of [ A ] 20 to 25% [ B ] 60 to 70% [ C ] 65 to 80% [ D ] 90 to 95% Answer : D 15 In a mass concrete, the aggregates occupy a space of [ A ] 25% [ B ] 75% [ C ] 40% [ D ] 60% Answer : B 16 The coarse aggregate which possess the property of good interlocking are [ A ] rounded shape [ B ] elongated shape [ C ] angular shape [ D ] none of the above Answer : C
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