27) Wet scrubbers are used in Electroplating plants to

Separate heavy metals

Generate de-ionised water

Mittigate air pollution

Remove mill/heat-treat scale

Answer is:

Mittigate air pollution

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

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28) The coating formed by Anodising of Aluminium by Sulphuric acid process mainly consists of

Oxide of Aluminium

Hydroxide of Aluminium

Sulphate of Aluminium

Carbonate of aluminium

Answer is:

Oxide of Aluminium

29) The nucleus of an atom contains

Protons and electrons

Electrons and neutrons

Protons and neutrons

Electrons only

Answer is:

Protons and neutrons

30) The products of neutralisation of an acid and a base are a salt and

Hydrogen

Oxygen

Water

None

Answer is:

Water

31) Which is a process by which the surface of a metal is made smooth and bright without appreciable metal removal, by rubbing it with a hard and polished tool.

Burnishing

Peening

Cladding

Case hardening

Answer is:

Burnishing

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

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27) Wet scrubbers are used in Electroplating plants to

Mittigate air pollution

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

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

28) The coating formed by Anodising of Aluminium by Sulphuric acid process mainly consists of

Oxide of Aluminium

29) The nucleus of an atom contains

Protons and neutrons

30) The products of neutralisation of an acid and a base are a salt and

Water

31) Which is a process by which the surface of a metal is made smooth and bright without appreciable metal removal, by rubbing it with a hard and polished tool.

Burnishing

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