Ch 3

Question 1

Lustrous non metals

Answer 1

Iodine
Graphite

Question 2

Soft metal except k , na

Answer 2

Lithium

Question 3

Non malleable metals

Answer 3

Mercury

Question 4

Non Ductile metal

Answer 4

Mercury

Question 5

Bad conductor of elect and heat except hg

Answer 5

Lead

Question 6

Non metal in liquid state

Answer 6

Bromine

Question 7

Most ductile metals

Answer 7

Platinum and gold

Question 8

Most malleable metals

Answer 8

Au
Ag

Question 9

Best conductor of heat

Answer 9

Au
Cu

Question 10

Ductility

Answer 10

Wire

Question 11

Malleability

Answer 11

Sheets

Question 12

Eg of acidic oxides with water (4)

Answer 12

So2+ h2o = h2so3
Co2 + h2o= h2co3
No2 + h2o= hno3 + hno2
So3 + h2o = h2so4

Question 13

H2co3

Answer 13

Carbonic acid

Question 14

Amphoteric oxides (5)

Answer 14

Aluminium oxide
Zinc oxide
Berellium oxides
Lead
Tin

Question 15

Al2o3 + hcl

Answer 15

Alcl3 + h2o

Question 16

Al2o3 + naoh

Answer 16

NaAlo2 + h2o

Question 17

Soluble metal oxides in water

Answer 17

Naoh
Koh

Question 18

Develops oxide layer when reacted with o2

Answer 18

Zn
Mg
Al
Pb
Fe
Cu = cuo (3)

Question 19

Fe + o2

Answer 19

Fe2o3

Question 20

Don’t react with air

Answer 20

Au
Ag
Cu

Question 21

Metals catch fire when reacted with water using h2

Answer 21

K
Na

Question 22

H2 not sufficient to catch fire and h2 with normal water and hot water respectively and forms hydroxide

Answer 22

Ca
Mg

Question 23

Reacts with steam and don’t form hydroxides

Answer 23

Al
Zn
Fe

Question 24

Al + h2o

Answer 24

Al2o3 + h2

Question 25

Fe + h2o

Answer 25

Fe3o4 + h2

Question 26

H2 gas is not relesed with which acid

Answer 26

Nitric acid ( HN03)

Question 27

What does hno3 reduce to when reacted with metal

Answer 27

No/no2/n2o

Question 28

Metal reacting with HNO3 and release h2

Answer 28

Mn Mg

Question 29

Ratio of hcl and hno3 in aqua regia

Answer 29

3:1

Question 30

Metal doesn't react with hcl

Answer 30

Cu

Question 31

Cucl2 colour

Answer 31

Blue green

Question 32

More reactive pb or cu

Answer 32

Pb

Question 33

Cunoe colour

Answer 33

Blue green

Question 34

Metals of high reactivity extracted by

Answer 34

Electrolysis

Question 35

Metals extraction of low reactivity

Answer 35

Roasting

Question 36

Metal extraction of med reactivity

Answer 36

Calcination Roasting

Question 37

Roasting for which ore

Answer 37

Sulphide ore

Question 38

Calcination for which ore

Answer 38

Carbonate ore

Question 39

Extraction of cuo

Answer 39

Cu2s + o2 = cu2o + so2 Cu2o + cu2s = cu + so2

Question 40

Reducing agent in med reac

Answer 40

Coke (c) Al

Question 41

Fe extraction

Answer 41

Fe2o3 + c = fe + co

Question 42

Thermite reaction

Answer 42

Fe2o3 + al = fe + al2o3 + heat

Question 43

High reactive metals extraction ex

Answer 43

Nacl Mgcl2 Cacl2

Question 44

Metals that need to be extracted at which terminal

Answer 44

Cathode (-)

Question 45

Gas effered at

Answer 45

Anode

Question 46

Refining of metals Thin strip works as

Answer 46

Cathode

Question 47

Refining metal Thick strip works as

Answer 47

Anode

Question 48

Impurities in electrolytic refining

Answer 48

Anode mud

Question 49

Corrosion of silver

Answer 49

Ag + H2s = ags + h2

Question 50

Ags colour

Answer 50

Black

Question 51

Corrosion of copper

Answer 51

Cu + co2 = cuco3

Question 52

Cuco3 colour

Answer 52

Green

Question 53

Galvanisation metal

Answer 53

Zn

Question 54

Stainless steel

Answer 54

Fe + ni + cr

Question 55

Amalgam

Answer 55

Hg + other metal

Question 56

Brass

Answer 56

Cu + zn

Question 57

Bronze

Answer 57

Cu + sn

Question 58

Solder

Answer 58

Pb + sn

Question 59

Steel

Answer 59

Fe + c

Question 60

Alloys used for welding

Answer 60

Brass Bronze