
SMA 5 opakování - Hliník a slitiny hliníku

Quiz
•
Science
•
1st - 5th Grade
•
Hard

Vojtěch Průcha
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jaká je přibližně měrná hmotnost hliníku?
1 700 kg/m3
7 800 kg/m3
2 700 kg/m3
19 250 kg/m3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je odolnost hliníkových slitin v alkalických látkách?
malá
velká
v KOH velká v NaOH malá
excelentní
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaký je hlavní legující prvek ve slitině EN AW 7025?
Zn
Cu
Si
Mn
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaký prvek snižuje u hliníkových slitin korozivzdornost?
Mn
Mg
Cu
Si
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaké slitiny se typicky precipitačně vytvrzují?
Al-Mn
Al-Cu
Al-Ni
Al-C
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dural je slitina:
AlSiMn
AlCuMg
AlCuZn
AlSiMn
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaký prvek je u většiny Al slitin nežádoucí (škodlivý)?
Cu
Fe
Zn
Mg
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