Q. Probability (up to one decimal place) of consecutively picking 3 red balls without replacement from a box containing 5 red balls and 1 white ball is                                   Ans: 0.5 Sol: Probability of consecutively picking 3 red balls without replacement (P)

Q. The initial concavity in the load-penetration curve of a CBR test is NOT due to A. uneven top surface B. high impact at start of loading C. inclined penetration plunger D. soft top layer of soaked soil Ans: high impact at start of loading

Q. As per IRC:37-2012, in order to control subgrade rutting in flexible pavements, the parameter to be considered is A. horizontal tensile strain at the bottom of bituminous layer B. vertical compressive strain on top of subgrade C. vertical compressive stress on top of granular layer ...

Q. Peak Hour Factor (PHF) is used to represent the proportion of peak sub-hourly traffic flow within the peak hour. If 15-minute sub-hours are considered, the theoretically possible range of PHF will be (A) 0 to 1.0                 (B) 0.25 to 0.75          (C) 0.25 to 1.0           (D) 0.5 to ...

Q. In the figures, Group I represents the atmospheric temperature profiles (P, Q, R and S) and Group II represents dispersion of pollutants from a smoke stack (1, 2, 3 and 4). In the figures of Group I, the dashed line represents the dry adiabatic lapse rate, whereas the horizontal axis represents ...

Q. As per IS 10500:2012, for drinking water in the absence of alternate source of water, the permissible limits for chloride and sulphate, in mg/L, respectively are (A) 250 and 200         (B) 1000 and 400        (C) 200 and 250         (D) 500 and 1000 Ans: 1000 and 400

Q. For a given discharge in an open channel, there are two depths which have the same specific energy. These two depths are known as (A) alternate depths                                       (B) critical depths (C) normal depths                                         (D) sequent depths ...

Q. Dupuit’s assumptions are valid for A. artesian aquifer B. confined aquifer C. leaky aquifer D. unconfined aquifer Ans: unconfined aquifer

Q. The clay mineral, whose structural units are held together by potassium bond is A. Halloysite               (B) Illite                        (C) Kaolinite                 (D) Smectite Ans: Illite                       

Q. Which one of the following statements is NOT correct? A. When the water content of soil lies between its liquid limit and plastic limit, the soil is said to be in plastic state. B. Boussinesq’s theory is used for the analysis of stratified soil. C. The inclination of stable slope in ...

Q. The contact pressure and settlement distribution for a footing are shown in the figure. The figure corresponds to a A. rigid footing on granular soil B. flexible footing on granular soil C. flexible footing on saturated clay D. rigid footing on cohesive soil Ans: rigid ...

Q. A flownet below a dam consists of 24 equipotential drops and 7 flow channels. The difference between the upstream and downstream water levels is 6 m. The length of the flow line adjacent to the toe of the dam at exit is 1 m. The specific gravity and void ratio of the soil below the dam are 2.70 ...