9189 Phase 1 Scientific Principles PP 5

Which of the following is NOT one of the basic properties of liquids that learners should be able to identify and describe by the end of the session?

• Water

• Refrigerants

• Anti-freeze/glycol mixes

• Solubility

By the end of the session, learners in the Level 3 Diploma in Plumbing and Domestic Heating should be able to identify applications for which of the following?

• Water

• Lubricants and greases

• Refrigerants

• All of the above

Which of the following is NOT a liquid commonly encountered in the plumbing industry?

• Water

• Refrigerants

• Lubricants

• Carbon dioxide

What is the most common fluid dealt with in the plumbing industry?

• Fuel oils

• Glycols and anti-freeze

• Water

• Lubricants

What proportion of the Earth's surface is covered by water?

• One-tenth

• Three-tenths

• Five-tenths

• Seven-tenths

What are the characteristics of water in its purest form?

• Colorful, odorous, and tasty

• Colorless, odorous, and tasteless

• Colorless, odorless, and tasteless

• Colorful, odorless, and tasteless

Where does the taste of water typically come from?

• The chemicals used to purify it

• The minerals that may be dissolved in it

• The plastic from the pipes it flows through

• The organic matter it comes in contact with

Which industry heavily relies on the use of water?

• Automotive industry

• Plumbing industry

• Electronics industry

• Textile industry

What is the chemical symbol for water?

• CO2

• H2O

• O2

• H2CO3

How many hydrogen atoms are there in a molecule of water?

• 1

• 2

• 3

• 4