
Kviz o bakru i drugim metalima
Quiz
•
Science
•
12th Grade
•
Practice Problem
•
Medium
Mario Čović
Used 3+ times
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27 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je gustoća bakra (Cu)?
8,92 kg/dm3
7,28 kg/dm3
1,74 kg/dm3
8,8 kg/dm3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na koju skupinu metala pripada bakar?
Teški metali
Laki metali
Plemeniti metali
Alkalni metali
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je vlačna čvrstoća lijevanog bakra?
137 N/mm2
470 N/mm2
392 N/mm2
157 N/mm2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je vlačna čvrstoća hladno vučenog bakra?
470 N/mm2
137 N/mm2
392 N/mm2
157 N/mm2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je izdržljivost bakra?
45 %
8 – 12 %
32 – 40 %
77 %
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koji je glavni razlog zašto se bakar koristi u elektrotehnici?
Dobar je vodič elektriciteta
Lako se lijeva
Velika tvrdoća
Niska gustoća
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja se boja javlja kod bakra kada se izloži zraku?
Crvena
Plava
Siva
Žuta
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