Set A

Question 1

Light scattered perpendicularly to an incident beam is partly

Answer 1

polarized

Question 2

Galvanized steel are steel products coated with

Answer 2

zinc

Question 3

“Heavy water” has a mass of

Answer 3

20

Question 4

What group of steels are high-carbon, high-chromium tools steels suitable for cold working applications

Answer 4

Group D

Question 5

Which of the following phenomenon cannot take place with sound waves?

Answer 5

polarization

Question 6

The ore from which iron is obtained is?

Answer 6

taconite

Question 7

How many atoms are there per unit cell for a face-centered cubic structure?

Answer 7

4

Question 8

What is the most undesirable of all elements commonly found in steels?

Answer 8

Phosphorus

Question 9

Spark plug makes use of which of the following materials for insulation?

Answer 9

Porcelain

Question 10

A software that is commonly known as firmware?

Answer 10

BIOS

Question 11

What is the minimum lighting load required by PEC for an office measuring 20m by 25m

Answer 11

14000 VA

Question 12

At what point is the applied force minimal in operating a hinge door?

Answer 12

farthest the hinge

Question 13

______ is regarded as father of computers

Answer 13

Charles Babbage

Question 14

It is a process of mixing water with air either by spraying or diffusing air through it

Answer 14

aeration

Question 15

Battery acid is the common name for

Answer 15

sulfuric acid

Question 16

Which of the ff refers to the diffusion of a solvent into a stronger solution in an attempt to equalize the two concentration?

Answer 16

osmosis

Question 17

table of elements, light metals

Answer 17

potassium

Question 18

What do you call the treating of a ore with aquaeous reagent to dissolve component selectively?

Answer 18

leaching

Question 19

The _____ when heated decompose to yield water and any hydrous salt

Answer 19

Hydrates

Question 20

Silicate Mineral having the characteristic properties of fibrous structure and fire resistance

Answer 20

Asbestos

Question 21

Following the production if condensation of a region are formed in which the pressure are lower than the equilibrium value. What will this be?

Answer 21

Rarefaction

Question 22

Metal that contains both cementite and graphite and is between the gray and white irons in composition and performance

Answer 22

Mottles iron

Question 23

A _______ is programmable multi-use machine that accepts data-raw facts and figures, and processes, or manipulates.

Answer 23

computer

Question 24

______ is a technology consists of electromagnetic devices and system for communicating over long distances

Answer 24

Telecommunication

Question 25

A _____ is one in which all microcomputers and other communication devices are connected in a continuous loop

Answer 25

Ring Network

Question 26

Adding more solute to an already saturated solution will cause the excess solute to settle down to the bottom of the container. What is this process called?

Answer 26

precipitation

Question 27

The maximum potential gradient that the material can withstand without rapture

Answer 27

Dielectric strength

Question 28

Carbon or alloy steel are capable of being hardened and tempered are used for?

Answer 28

Tool Steel

Question 29

What group of steels are molybdenum high-speed steels?

Answer 29

Group M

Question 30

Aluminum is produced from

Answer 30

bauxite ore