Interview question based on skill :
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Total Questions: 20
1. By which of the following ways is lime obtained?
Correct Answer is : Burning limestone
2. Which of the following pairs is matched properly?
Correct Answer is : Class B – Mortar
3. Lime has been conventionally classified into how many types?
Correct Answer is : 3
4. Which of the following is a property of Fat Lime?
Correct Answer is : High degree of plasticity
5. Lime obtained from calcination of Pure Limestone is called:
Correct Answer is : Quick Lime
6. The cost of the lime soda process is _________
Correct Answer is : Less
7. ___________can be used for the turbid water.
Correct Answer is : Lime soda process
8. Hardness of the water in the lime soda process is reduced to __________
Correct Answer is : 15-30ppm
9. Total dissolved solids in the lime soda process is _________
Correct Answer is : Reduced
10. For avoiding the reduction of the residual hardness, incomplete precipitation and slow reaction, The reaction is carried out at __________ temperature.
Correct Answer is : 50-60oC
11. Lime soda process removes _________ from the water.
Correct Answer is : Mineral acids
12. Batch process is only used for removing the hardness of the water on _________
Correct Answer is : Small scale
13. The amount of coagulate if added in the hot lime soda process is __________
Correct Answer is : Very low
14. The final hardness of the water after treating by the hot lime soda process is about __________
Correct Answer is : 20-25ppm
15. Due to heating at high temperature in the hot lime soda process reduces the __________
Correct Answer is : Corrosion of boiler
16. Lime soda process does not involve steps.
Correct Answer is : FALSE
17. In hot lime soda process, the bacteria in water is reduced to the minimum due to the _________
Correct Answer is : High temperature
18. In batch process, when the tank gets filled then it indicates that ____________
Correct Answer is : Softening is completed
19. Reagent used in the lime soda process is _______
Correct Answer is : Not regenerated
20. In lime soda process, the change in the hardness of the water needs ________
Correct Answer is : Change in dose of lime and soda
