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ISRO Technician-B
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ISRO Technician-B Plumber 2017
62

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

62) _____ prevents ingress of foul air, insects and vermin from the sewers

Vent pipe

Traps

Tee

Self siphonage

Answer is:

Traps

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

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

63) For portable water, the highest desirable level of chloride content is

250 mg/l

600 mg/l

125 mg/l

325 mg/l

Answer is:

250 mg/l

64) What is used to binding stones, bricks, etc together?

Trowel

Mortar

Spade

Mortar pan

Answer is:

Mortar

65) _____ has a long blade ideal for cleaning grooves and accessing tight spaces.

Skew chisel

Mortise chisel

Paring chisel

Corner chisel

Answer is:

Paring chisel

66) Which grade GI pipe is used for internal plumbing in buildings?

High

Large

Medium

Thin

Answer is:

Medium

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

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