
Materiale metalice
Authored by Mariana Riclea
Instructional Technology
7th Grade
Used 9+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Minereul de bază din care se extrage aluminiul este:
bauxita;
dioxidul de siliciu;
pirita;
oxidul de calciu
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fonta se obține în:
furnal;
cuptor Martin;
convertizor cu oxigen;
cuptor electric
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Este material metalic feros:
fonta;
cuprul;
duraluminiul;
plumbul
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Este aliaj neferos:
alama
oțelul
cuprul;
fonta.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aliaj al fierului cu carbonul, cu un conținut de carbon de până la 2,14% este:
fonta;
oțelul;
alama;
bronzul.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oțelul este obținut prin reducerea conținutului de carbon din:
aluminiu;
calcar;
cocs;
fontă.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Din furnal rezultă produsul principal:
zgura;
fonta;
gazele de furnal;
cocs
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