
1. elektro
Authored by Ljubiša Despotović
Chemistry
1st Grade
Used 36+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koja od navedenih tvrdnji NIJE točna za nemetale:
nalaze se se desne strane PSE
pojavljuju se u sva tri agregatna stanja
tvore katione
ne mogu se kovati i lijevati
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Koje su od navedenih tvrdnji točne za vodik:
zapaljen gori
dobiva se katalitičkim raspadom vodikova peroksida
teži je od zraka
lakši je od zraka
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Koje od navedenih plinova možemo dobiti frakcijskom destilacijom tekućeg zraka:
vodik
klor
dušik
kisik
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koji plin NE MOŽEMO dobiti elektrolizom vode:
kisik
dušik
vodik
sve navedene plinove možemo dobiti elektrolizom vode
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koja je uloga pekarskog kvasca prilikom rasapda vodikova peroksida:
usporava reakciju
ubrzava reakciju
snižava temperaturu smjese da reakcija bude manje burna
snižava temperaturu smjese budući da u tom slučaju nastaje više plina
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Formula ozona je:
O2
O3
H2O2
ništa od navedenog nije točno
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
U kojem nizu su sve navedene formule ispravno napisane:
NaCl, HCl, MgCl2, AlCl3
NaCl, H2Cl2, MgCl2, Al3Cl
NaCl, HCl2, Mg2Cl2,AlCl3
NaCl, HCl, MgCl2,AlCl
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