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Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds
Consider the following statements in respect of dams: 1. In a gravity dam, a grout curtain is provided near the toe to reduce the exit gradient. 2. A drainage gallery with its drainage pipe system provided in a gravity dam reduces the uplift pressure at all levels below the upstream water level. 3. An earthquake acceleration of 0.1 g acting vertically downward causes a decrease of 10% in the limit weight of concrete and of water in a gravity dam. 4. The Tehri dam is a gravity dam. Which of the above statements are correct?
Which of the following is not correctly matched?  Dam  River  (1) Gandhi Sagar Dam  Chambal  (2) Nagarjuna Sagar Dam  Krishna  (3) Tehri Dam  Kaveri  (4) Rihand Dam  Rihand
Which of the following statements are true with regard to energy dissipation below a dam? (i) If the upper conjugate depth of a hydraulic jump is below the tailwater, little energy will be dissipated (ii) An upturned bucket will protect the dam from scour by moving material toward the dam. (iii) A secondary dam may increase tailwater height, thereby causing a hydraulic jump to form at the toe of the main dam. (v) A slopping apron above streambed level may be used to control the hydraulic jump so that it occurs on the apron. 
A concrete gravity dam having a maximum reservoir level at 200 m and the RL of the bottom of the dam 100 m. The maximum allowable compressive stress in concrete is 3000 KN/m2 and the specific gravity of concrete is 2.4. Calculate the height of the dam and check whether it is a high dam or low dam.
Which of the following statement(s) is/are true for the Sardar Sarovar Project (SSP)? (i) Sardar Sarovar Dam is the third highest concrete dam in India (ii) Sardar Sarovar Dam is an earthen gravity dam across river Narmada (iii) SSP comprises 30 Major Dams, 135 Medium Dams and about 3,000 Minor Dams along the 1,312 km length of the Narmada river.
Which one of the following pairs is not correctly matched?  (a) Sardar Sarovar Dam  (i) Narmada River  (b) Tilaiya Dam  (ii) Konar River  (c) Gandhi Sagar Dam  (iii) Chambal River  (d) Nagarjuna Sagar Dam  (iv) Krishna River
Which one is Incorrect? 1. Bankali Dam-Jalore 2. Som Kamla Amba Dam-Dungarpur 3. Morel Dam-Sawai Madhopur 4. Jhakham Dam-Pratapgarh
Which Match is incorrect? Panchana Dam - Karauli Jawai Dam - Pali Bisal pur Dam - Tonk Vakal Dam - Pratapgarh
Match the following dams with their respective Rivers Dam River A. Tehri Dam 1. Kaveri B. Kallanai Dam 2. Bhagirath C. Bilaspur Dam 3. Krishna D. Nagarjuna Sagar 4. Banas Which of the below-mentioned option is the correct match?