PCP - Past Board

Question 1

Ozone is readily dissolved in

Answer 1

Turpentine oil

Question 2

Lead to brown staining in sanitary ware

Answer 2

Iron and manganese

Question 3

It is defined as the tendency of an atom to attract electrons

Answer 3

Electronegativity

Question 4

Dispersion if solid or liquid particles of microscopic size in a gas media such as smoke

Answer 4

Aerosol

Question 5

Electron affinity is

Answer 5

The change in energy when a gaseous atom in its ground state gains an electron

Question 6

Abundance of Hydrogen in Earth’s crust

Answer 6

1% by weight

Question 7

Boiling point of liquid oxygen

Answer 7

-183 deg C

Question 8

Group having compounds which are often colored

Answer 8

Transition metals

Question 9

With regards to corrosion if metals, passivation is

Answer 9

Inhibiting further deterioration

Question 10

Silicone Rubber

Answer 10

Trihydroxymethyl silane

Question 11

Optical pyrometer is used to

Answer 11

Measure temperatures of solid objects at temperatures greater than 700 deg C

Question 12

Color of commercial nickel chloride

Answer 12

Green

Question 13

Alka-seltzer is an example of

Answer 13

Antacid

Question 14

Treatment of waste appropriate to effect soluble organic removal

Answer 14

Activated sludge

Question 15

Antiknock additive to fuel

Answer 15

Tetraethyl lead

Question 16

Major components of photochemical smog

Answer 16

NOx and hydrocarbon