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

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

56) The presence of lead in water can be detected by using

Answer is:

Sulphuric Acid

57) One unit of purified water is equivalent to

Answer is:

1000 litres

58) The minimum diameter of working chamber of a circular manhole should be

Answer is:

1.2 m

59) The mass of 1 cubic meter of cement concrete is

Answer is:

2500 kg

60) Water hammer is caused in pipe lines when

Answer is:

Valves and taps are closed suddenly

Explanation:

Water hammer is caused in pipe lines when valves and taps are closed suddenly.

Water hammer is caused in pipe lines when

9
10
11
12
13
14
15