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ISRO Technician-B Plumber 2019
65

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

65) Maximum Gradient given for 150 mm Drain pipe

1:75

1:40

1:30

1:50

Answer is:

1:30

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

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Related 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

R=A/P

R=P/A

R=P*A

R=A+P

Answer is:

R=A/P

67) For floating impurities in water, density is

less than water

More than water

Equal to water

None of these

Answer is:

less than water

68) Dissolved impurity in water

Mg

Clay

Bacteria

None of these

Answer is:

Mg

69) Temporary hardness in water is due to

Calcium Carbonate

Calcium Sulphate

Ferrous hydroxide

None of these

Answer is:

Calcium Carbonate

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

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