alloys and crude oil

Question 1

state the composition of carbon steel

Answer 1

iron, carbon

Question 2

state the composition of titanium alloy

Answer 2

titanium, aluminium, vanadium

Question 3

state the composition of bronze

Answer 3

copper, tin

Question 4

state the composition of brass

Answer 4

copper, zinc

Question 5

state the composition of duralumin

Answer 5

aluminium, copper, magnesium, manganese

Question 6

state the composition of coinage metals

Answer 6

copper, zinc, nickel, tin

Question 7

state the composition of carat gold

Answer 7

gold, silver, copper

Question 8

state the composition of solder

Answer 8

tin, lead

Question 9

uses of carbon steel

Answer 9

making construction materials

Question 10

use of titanium alloy

Answer 10

aircraft bodies

Question 11

uses of bronze

Answer 11

statues

Question 11

uses of brass

Answer 11

musical instruments

Question 12

uses of duralumin

Answer 12

aircraft bodies

Question 13

uses of coinage metals

Answer 13

coins

Question 14

uses of carat gold

Answer 14

ornaments, coins

Question 15

uses of solder

Answer 15

joining electronic parts in circuit boards

Question 16

crude oil is also known as ……., which is a thick black liquid with ……. odour

Answer 16

petroleum; pungent

Question 17

crude oil is made up of…..

Answer 17

hydrocarbons

Question 18

how many carbons and hydrogens are there in methane

Answer 18

C:1
H:4

Question 19

how many carbons and hydrogens are there in ethane

Answer 19

C:2
H:6

Question 20

how many carbons and hydrogens are there in propane

Answer 20

C:3
H:8

Question 21

how many carbons and hydrogens are there in butane

Answer 21

C:4
H:10

Question 22

what happens when crude oil is burnt

Answer 22

。black smoke and harmful gases are produced

Question 23

the separation of crude oil is called…..

Answer 23

fractional distillation

Question 24

molecules of larger size has a ....... b.p.

Answer 24

higher

Question 25

each fraction contains a mixture of hydrocarbons with small differences in .......

Answer 25

b.p.

Question 26

uses of carat gold

Answer 26

ornaments, coins

Question 26

uses of carbon steel

Answer 26

making construction materials

Question 26

uses of duralumin

Answer 26

aircraft bodies

Question 26

uses of brass

Answer 26

musical instruments

Question 26

uses of bronze

Answer 26

statues

Question 27

use of titanium alloy

Answer 27

aircraft bodies

Question 27

uses of coinage metals

Answer 27

coins

Question 28

uses of carbon steel

Answer 28

making construction materials

Question 28

use of titanium alloy

Answer 28

aircraft bodies

Question 28

uses of duralumin

Answer 28

aircraft bodies

Question 28

uses of bronze

Answer 28

statues

Question 28

uses of brass

Answer 28

musical instruments

Question 28

uses of carat gold

Answer 28

ornaments, coins

Question 28

uses of coinage metals

Answer 28

coins

Question 29

hydrocarbons with larger molecules condense at .... levels

Answer 29

lower

Question 30

state the fractions from top to bottom

Answer 30

liquified petroleum gas (LPG) petrol (gasoline) naphta kerosene diesel oil fuel oil lubricating oils bitumen

Question 31

main uses of LPG

Answer 31

。fuels for taxi and public light buses

Question 32

main uses of petrol

Answer 32

。fuels for motor cars

Question 33

main uses of naphtha

Answer 33

。raw materials of production of plastics

Question 34

main uses of kerosene

Answer 34

。fuels for aeroplanes

Question 35

main uses of diesel oil

Answer 35

。fuels for heavy vehicles

Question 36

main uses of fuel oil

Answer 36

。fuels for ships 。generating electricity in power plants

Question 37

main uses of lubricating oils

Answer 37

。making lubricating oils and candles

Question 38

main uses of bitumen

Answer 38

。materials for covering roads