ISRO Technician-B Plumber Question Paper - 2017 (Set - 1) with Answer Key

ISRO Technician-B Plumber Question Paper - 2017 (Set - 1) with Answer Key

26) Two numbers whose sum is 24 and product is 143 are

Answer is:

13, 11

27) From a deck of 52 playing cards, the probability of getting a red card is

Answer is:

1/2

28) The traps which are provided at different places in the drain pipe are

Answer is:

Gully traps

29) Manholes are generally located at

Answer is:

All of these

Explanation:

Manholes are generally located at
* All changes of direction of sewer
* All changes of gradient of sewer
* All junctions of different sewers

Manholes are generally located at

30) A GI pipe has a coating of

Answer is:

Zinc

3
4
5
6
7
8
9