
Označavanje plemenitih kovina, plemeniti metali -legure
Quiz
•
Science
•
3rd Grade
•
Practice Problem
•
Hard
Julija Lesjak
Used 3+ times
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11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Postupak dobivanja zlata ovisi o tome je li ruda sulfidna ili oksidna?
Točno
Netočno
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Flotacija je razdvajanje zlata od čestica_______ pomoću pjene
čestica prašine
čestica minerala
pjene
reagensa
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Uvjet za postupak flotacije je zlato u rudama u obliku sitnih čestica ili vezano u sulfidne minerale,a to su:
minerali bakra
olovo
cink
ništa od navedenog
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Aktivni ugljen je zajednički naziv za sve materijale koji se uglavnom sastoje od ugljika?
Točno
Netočno
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kristali su pravilno složeni geometrijski oblici čija se struktura ne može jasno vidjeti pod mikroskopom?
Točno
Netočno
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Neki od kristalnih sustava su:
oksidni
kubni
heksagonalni
tetragonalni
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dodavanje jednog ili više metala ili nemetala osnovnoj leguri, naziva se:
amalgamacija
legiranje metala
flotacija
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