Non Metals

Question 1

A liquid has a ____ shape and a ____volume

Answer 1

Changeable; fixed

Question 2

Kilograms per cubic meter (kg/m3) is the unit of metric measurement for

Answer 2

Density

Question 3

The temperature of a liquid decreases as it

Answer 3

Evaporates

Question 4

During laminar flow, the fluid in a pipe

Answer 4

Moves in parallel layers

Question 5

The solubility of a gas in a liquid is usually _____at the liquids boiling point

Answer 5

Lowest

Question 6

Plastic that can be reheated and reshaped many times are called

Answer 6

Thermoplastics

Question 7

What method of molding produces intricate parts at high speed and low cost?

Answer 7

Injection molding

Question 8

In filament winding, glass fiber is wound around a form, called a(n)

Answer 8

Mandrel

Question 9

When drilling most plastics, you should reduce the feed rate just before the drill point ______

Answer 9

Penetrates the far side of

Question 10

When preparing an area of corroded surface to be patched, which side of the material should be cleaned?

Answer 10

Both sides

Question 11

If stretched to twice it’s normal length and released, an elastomer will

Answer 11

Return to its original shape

Question 12

Class T rubber compounds resist damage from

Answer 12

Extreme temperature

Question 13

Most rubber compounds are

Answer 13

Flammable

Question 14

In vulcanization, the more sulfur, that is added, the ____ the rubber becomes

Answer 14

Harder

Question 15

What characteristic is most important in the rubber coating of wire in extension cords?

Answer 15

Flexibility

Question 16

Cutting a log lengthwise through or near its centerline produces a
______cut

Answer 16

Radial

Question 17

The actual length of a board is stated in _____ feet. Lumber is sold in ______ feet

Answer 17

Running; board

Question 18

The best Veneer in softwood plywood is graded

Answer 18

N

Question 19

What with many knots should not be used for structural support because it is

Answer 19

Weak

Question 20

How deep should the pilot hole for a screw be drilled in softwood?

Answer 20

Half the screw length

Question 21

Air-entrained concrete is commonly used for

Answer 21

Structures exposed to severe cold

Question 22

Cinder block is commonly used for construction

Answer 22

Above ground

Question 23

Type N mortar is a ______strength mortar used for ___bearing clay tile construction.

Answer 23

Medium; load

Question 24

Which type of plaster sets very quickly and should be used only for small patching jobs?

Answer 24

Plaster of Paris

Question 25

27" X 30" 30" x 33"

Answer 25

23 7/8" × 26 7/8"

Question 26

Convection heat is the

Answer 26

Transfer of heat by fluids

Question 27

What type of insulation can withstand both high and low temperatures, is chemically inert and may use be used in ovens and freezers?

Answer 27

Mineral wool

Question 28

You can use lead sheet or plastic film for

Answer 28

Reducing vibration of pipes or ducts

Question 29

An asphalt coating serves as a(n). _____ on the outside of underground walls

Answer 29

Moisture barrier

Question 30

Which of the following materials has the highest dielectric strength?

Answer 30

Mica

Question 31

The part of a paint that binds solid particles into a uniform film is called the

Answer 31

Vehicle

Question 32

The single most important factor for success in painting a structure is

Answer 32

Surface preparation

Question 33

In sandblasting, the intensity that produces the best anchor pattern for paint is called_______blasting

Answer 33

White

Question 34

The color specified by a ANSI to indicate first-aid stations and safety equipment in a plant is

Answer 34

Green

Question 35

The process of melting zinc with an oxyacetylene flame and spraying it onto a metal surface for protection is called

Answer 35

Metalizing

Question 36

Which pH value below indicates an acid solution?

Answer 36

5

Question 37

The solvent ____ should not be used for cleaning because it's highly flammable and irritates the skin

Answer 37

Gasoline

Question 38

You should use _____ acid to dissolve hard water deposits in heating and cooling systems

Answer 38

Sulfamic

Question 39

Chemicals used to prevent the formation of scale in piping systems and boilers are called

Answer 39

Sequestrants

Question 40

Fires involving electrical equipment and wiring are designated

Answer 40

Class C

Question 41

The completion of all chemical and physical reactions that affect adhesive bonding is called

Answer 41

Curing

Question 42

An adhesive made of water soluble gums, and starches is called

Answer 42

Mucilage

Question 43

The strongest adhesive joint is the ______ joint

Answer 43

Bevel lap

Question 44

Good electrical insulation is provided by______tape

Answer 44

Rubber

Question 45

Tapes coated with fluorescent adhesive are used where service conditions include

Answer 45

High temperatures

Question 46

Activated carbon is widely used for

Answer 46

Absorbing impurities

Question 47

At room temperature carbon is chemically

Answer 47

Inert

Question 48

Excessive noise in electric hand tools often indicates

Answer 48

Carbon brush problems

Question 49

Noporous carbon seals are used in applications where

Answer 49

Even a tiny leak would be harmful

Question 50

In shaft seals that have two individual packing rings the joints should be positioned______ apart

Answer 50

180