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ISRO Technician-B Plumber 2019
5

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

5) Corrosion in Cl pipes are prevented by coating

Tin

Bituminous paint

Zinc

Chromium

Answer is:

Bituminous paint

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

6) The process which removes colloidal matter in water

Filtration

Disinfection

Sedimentation

Screening

Answer is:

Filtration

7) Pipes for water supply are tested for

Leakage

Dimensions

Pressure

All of the

Answer is:

All of the

8) The process used for the removal of dissolved carbon dioxide from the supply water is

Coagulation

Agitation

Sedimentation

Aeration

Answer is:

Aeration

9) Alum increases

Hardness of water

Carbonates in water

Sulphates in water

Acidity of water

Answer is:

Acidity of water

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

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