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- Question
Use of coagulants such as alum
Options- A. results in reduction of pH of the treated water.
- B. results in increase of pH of the treated water.
- C. results in no chnage in pH of the treated water.
- D. may cause an increase in decrease of decrease of pH of the treated water.
- Correct Answer
- results in reduction of pH of the treated water.
- 1. The best quality of filter material is obtained from quartzite if it does not loose weight when placed in hydro-chloric acid for 24 hours, more than
Options- A. 5%
- B. 8%
- C. 10%
- D. 12%
- E. 15%. Discuss
- 2. Bitumen in
Options- A. solid state, is called asphalt
- B. semi fluid state, is called mineral tar
- C. fluid state, is called petroleum
- D. all the above. Discuss
- 3. Bitumen may be dissolved in
Options- A. carbondioxide
- B. water
- C. sodium chloride
- D. carbon disulphide
- E. none of these. Discuss
- 4. The joint used for joining the plain ends of cast iron pipes, is
Options- A. flanged joint
- B. socket and spigot joint .
- C. dresser coupling joint
- D. flexible joint
- E. expansion joint. Discuss
- 5. Shear stress is directly proportional to
Options- A. the velocity
- B. the shear strain
- C. the viscosity
- D. the velocity. Discuss
- 6. While estimating the qualities for the construction of a building, the correct metric unit is
Options- A. Metre for length
- B. Cubic metre for area
- C. Square metres for volume
- D. Kilogram for weight
- E. Litre for capacity Discuss
- 7. The concrete slump recommended for foundations, is
Options- A. 25 to 50 mm
- B. 30 to 125 mm
- C. 50 to 100 mm
- D. 75 to 125 mm
- E. none of these. Discuss
- 8. The main function of sleepers, is
Options- A. to support rails
- B. to hold rails at correct gauge
- C. to distribute load from the rails to ballast
- D. all the above. Discuss
- 9. In sun-light water poor in phyto plank tons appears :
Options- A. deep blue
- B. red
- C. green
- D. yellow Discuss
- 10. The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is
Options- A. 20 cm
- B. 25 cm
- C. 30 cm
- D. 35 cm
- E. 40 cm Discuss
More questions
Correct Answer: 5%
Correct Answer: all the above.
Correct Answer: carbon disulphide
Correct Answer: dresser coupling joint
Correct Answer: the shear strain
Correct Answer: Litre for capacity
Correct Answer: 50 to 100 mm
Correct Answer: all the above.
Correct Answer: deep blue
Correct Answer: 30 cm
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