🚧 Civil Engineering Solved MCQs with Answers

Practice 1228 approved 🚧 Civil Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

1228 solved MCQs

Pick up the correct statement from the following :Answer: All the above. The maximum permissible nitrites in public water supplies, isAnswer: Nil A high velocity of wash water is required forAnswer: rapid gravity filter without strainers In distribution pipes, drain valves are provided atAnswer: lower point Corrosion of well pipes may not be reduced byAnswer: using screens having larger area of openings Manholes along the mains from the source to a city are provided at 500 m intervals inAnswer: all the above. The population growth curve isAnswer: S-shaped curve Turbidity of raw water is a measure ofAnswer: suspended solids If V is total consumption of water in litres for a population of N individuals, per capita consumption or water allowance for the water supply Q, is given byAnswer: Q=V/365N Water supply includesAnswer: all the above. Asbestos pipes areAnswer: all the above. The maximum depth of sedimentation tanks is limited toAnswer: 6 m. By boiling water, hardness can be removed if it is due toAnswer: calcium bicarbonate For determining the velocity of flow of underground water, the most commonly used non-empirical formula isAnswer: Darcy's formula The least thickness of class B cast iron (spun) pipe, isAnswer: 8.6 mm According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required forAnswer: all the above. The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced levelAnswer: 1485 m. The factor affecting per capita demand, isAnswer: all the above. Pick up the incorrect statement from the following. The underground sources of water, is fromAnswer: storage reservoirs Disinfection of drinking water, is done to removeAnswer: bacterias SunlightAnswer: impedes growth of algae The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, isAnswer: 3.00 m. Average annual rainfall at any station is the average of annual rainfall over a period ofAnswer: 35 years. Time of concentrationAnswer: time taken for the storm water to travel from the most remote point to the drain. If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, isAnswer: 2880 kilo litres The fire demand of a city may be worked out byAnswer: All the above. Aeration of water is done to removeAnswer: odour The yield of a rapid gravity filter as compared to that of slow sand filter, isAnswer: 30 times The minimum recommended diameter of sewers, isAnswer: 15 cm Aerobic bacteriasAnswer: All the above.