VSSC Plumber Paper 2019

Vikram Sarabhai Space Center Technician Plumber Paper 2019

Pipes used in plumbing applications will have all of the following markings except
(a) pipe size
(b) manufacturer’s brand name
(c) Pressure rating
(d) Length of pipe

____ receives discharge from water closet, urinals
(a) Vent pipe
(b) Rain water pipe
(c) Waste pipe
(d) Soil pipe

Corrosion in CI pipes are prevented by ____ coating
(a) Tin
(b) Bituminous paint
(c) Zinc
(d) Chromium

The process which removes colloidal matter in water is ____
(a) Filtration
(b) Disinfection
(c) Sedimentation
(d) Screening

Pipes for water supply are tested for
(a) Leakage
(b) Dimensions
(c) Pressure
(d) All of the above

The process used for the removal of dissolved carbon dioxide from the supply water is
(a) Coagulation
(b) Agitation
(c) Sedimentation
(d) Aeration

Alums increases
(a) Hardness of water
(b) Carbonates in water
(c) Sulphates in water
(d) Acidity of water

Rusting can be prevented by applying coating of
(a) White lead
(b) Bitumen
(c) Red lead
(d) Zinc Oxide

Turpentine oil is used in paints as
(a) Vehicle
(b) Base
(c) Drier
(d) Thinner

A street sewer into which sewer from house connections is poured is called
(a) Head sewer
(b) Main sewer
(c) Street sewer
(d) Lateral sewer