
Chrom, mangan, wolfram, vanad
Authored by Martina Lubojacká
Science
1st Grade
Used 2+ times

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20 questions
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1.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Rozpouštěním chromu ve zřed. H2SO4 vzniká:
síran chromitý
voda
oxid siřičitý
vodík
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Který kation chromu je pro tělo zdravý:
chromitý kation
chromový kation
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Růžovou barvu má:
oxid manganatý
oxid manganitý
oxid manganičitý
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Krystalky manganistanu draselného mají barvu:
zelenou
fialovou
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oxid manganičitý se triviálně nazývá:
krevel
burel
hnědel
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Aluminotermicky se chrom získává z oxidu chromitého redukcí za pomocí:
olova
zinku
hliníku
sodíku
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Typické antiseptické účinky vykazuje roztok:
mangananu draselného
manganistanu draselného
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