Ammonia work sheet

Question 1

Name three properties of ammonia?

Answer 1

toxic, high latent and sensible heat, occurs naturally, pungent smell

Question 2

What is the coefficient of thermal expansion?

Answer 2

measures change based on change in temp

Question 3

Name three physical description of gas ammonia?

Answer 3

lighter than oil, colourless gas, easily compressed

Question 4

Name three physical description of liquid ammonia ?

Answer 4

heavier than air, soluble in water, evaporators at atmospheric pressure

Question 5

Name three uses of ammonia?

Answer 5

Ice rink, curling rink, fertilizer, trailer fridge

Question 6

Can we wear contact lenses when exposed to ammonia? Why?

Answer 6

No, it can get trapped between your eye and contact lenses

Question 7

Ammonia is explosively flammable in air between concentrations of ___ and ___% (by volume)

Answer 7

16 and 27%

Question 8

Ammonia can form explosive mixture with?

Answer 8

the right concentrations of air

Question 9

Moist ammonia attacks _______, _____, ____, ________, and most of their alloys.

Answer 9

copper, zinc, tin, cadmium, and most of their alloys.

Question 10

Name nine protective equipment types;

Answer 10

goggles, suit, gloves, respirator, leak detector, eye wash, shower, boots

Question 11

A minimum of __ employees shall be present during the draining of the chiller.

Answer 11

2

Question 12

When welding an ammonia line, what must be done?

Answer 12

isolate ammonia and purge with nitrogen

Question 13

Ventilation of the machine room by means of a suitable fan shall be provided to ensure at least ___ air changes per hour

Answer 13

15