ISRO Technician-B Plumber Question Paper - 2019 (Set - 1) with Answer Key

ISRO Technician-B Plumber Question Paper - 2019 (Set - 1) with Answer Key

66) If A is area of cross section of flow and P is the wetted perimeter, Hydraulic mean depth (R) is

Answer is:

R=A/P

67) For floating impurities in water, density is

Answer is:

less than water

68) Dissolved impurity in water

Answer is:

Mg

69) Temporary hardness in water is due to

Answer is:

Calcium Carbonate

70) How much time will it take for an amount of Rs.450 to yield Rs.81 as interest at 4.5% per annum of simple interest?

Answer is:

4 yrs