
Upotreba nemetala i njihovih jedinjenja
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Easy
Danijela Gligorić
Used 4+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Za gaziranje pića i gašenje požara koristi se.....
CO2
SO2
SO3
NO
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Za sterilizaciju suvog voća, izbeljivanje vune, svile i perja koristi se....
CO2
SO3
P2O5
SO2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fosforna kiselina je neorganska kiselina, bez boje i mirisa. Forforna kiselina može biti u tečnom ili kristalnom obliku, korozivna je za metal, kao i za ljudska tkiva. U industriji hrane se koristi jer je jeftina, poboljšava ukus i dobar je konzervans. Fosforna kiselina ukus čini intenzivnijim, a istovremeno sprečava razvoj mikroorganizama, koji se lako razmnožavaju u namirnicama punim šećera. Ako ortofosforna kiselina može da „pojede“ rđu sa metala, šta onda radi našem organizmu? Naravno, ništa dobro.
Formula fosforne kiseline je:
H3PO3
H2SO4
H3PO4
H2PO4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Gas azot-suboksid (gas smejavac) se koristi u medicini kod manjih hirurških i stomatoloških procedura, ali lekari upozoravaju da prekomernim i nekontrolisanim uzimanjem može biti štetan po zdravlje. Kada se udiše gas smejavac u povećanim koncentracijama ne može da se kontroliše motorika, pa su padovi i povrede česti.
Kako se pakuje pod pritiskom i često je veoma hladan, može izazvati opekotine usana, grla, nosa, oštetiti pluća. Gas smejavac ima formulu:
NO
N2O
NO2
N2O5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Na slici je prikazan:
jod
brom
hlor
fluor
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Na slici je prikazan:
brom
hlor
sumpor
jod
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Koja se od navedenih kiselina nalazi u akumulatorima?
fosforna
ugljena
karbonatna
sumporna kiselina
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