Test
Extraction of metals and Rusting Topic 1
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (14)
1What is an alloy?
- AA pure metal
- BA metal with another metal mixed in
- CA soft type of metal
2How does the structure of an alloy improve its strength?
- ADifferent size particles disrupt the metallic structure.
- BOnly strong metals are used.
- CAlloying does not improve the strength.
3Alloying does not improve the properties of a metal and has a big effect on the reactivity.
- AVerdadero
- BFalso
4[blank_start]Stainless[blank_end] steel is [blank_start]used[blank_end] for cutlery and surgical scalpels but it [blank_start]isn't[blank_end] used for stents to repair damaged arteries.
- AStainless
- Bused
- Cisn't
5Lithium is [blank_start]more[blank_end] reactive than copper or zinc because it is [blank_start]found[blank_end] in [blank_start]Group[blank_end] [blank_start]1[blank_end] of the [blank_start]periodic[blank_end] table and is therefore a [blank_start]very[blank_end] reactive metal.
- Amore
- Bless
- Cfound
- Dlost
- E1
- F7
- GPeriod
- HGroup
- Ireactivity
- Jperiodic
- Kvery
- Lun-
6Iron can be [blank_start]displaced[blank_end] from iron oxide by [blank_start]heating[blank_end] strongly with [blank_start]carbon[blank_end]. The carbon becomes [blank_start]oxidised[blank_end] in this reaction. Calcium [blank_start]cannot[blank_end] be extracted in this way because it is [blank_start]more[blank_end] reactive than carbon.
- Adisplaced
- Bremoved
- Cheating
- Dreacting
- Eelectrolysis
- Fcarbon
- Goxidised
- Hreduced
- Ican
- Jcannot
- Kmore
- Lless
7Label the blast furnace.
- AHot air blasts
- BSlag
- CMolten iron
- DHot waste gases
- Eiron ore
- Flimestone
- Gcoke
8Which three substances are essential for rusting to take place?
- Airon
- Bwater
- Cair
- Doxyen
- Esalt
- Fwater
9Why does aluminium not corrode as quickly as steel and iron?
- AIt is not very reactive.
- BIt is always painted.
- CIt has a protective layer of aluminium oxide.
10Which metal could be used for the sacrificial protection of iron?
- AMagnesium
- BTin
- CCopper
11The delocalised electrons are free to move in metals and these can carry the charge. Positive ions do not move in metallic bonding.
- AVerdadero
- BFalso
12Almost all metals are [blank_start]malleable[blank_end], which means they can be beaten into [blank_start]shape[blank_end].
- Amalleable
- Bshape
13Aluminium is also known as [blank_start]bauxite[blank_end]. [blank_start]Bauxite[blank_end] is a [blank_start]reddish[blank_end] brown rock that contains aluminium oxide and [blank_start]impurities[blank_end].
- Aimpurities
- Blead
- Creddish
- Dgreenish
- EBauxite
- FHaematite
- Ghaemitite
- Hbauxite
14Limestone is added to the [blank_start]blast[blank_end] furnace to [blank_start]remove[blank_end] impurities in the [blank_start]iron[blank_end] ore. This forms [blank_start]slag[blank_end] which can be easily [blank_start]removed[blank_end].
- Ablast
- Bremove
- Ciron
- Dslag
- Eremoved
Información
- Descripción
- Test sobre Extraction of metals and Rusting Topic 1, creado por mawan409 el 19/03/2016.
- Autor
- mawan409
- Idioma
- English
- Visitas
- 180
- Etiquetas
- Valoración
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