9. KD. METALAI.
9th Grade
•15 Qs
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9. KD. METALAI.
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Vygandas Marozas
Used 32+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kuri medžiaga nereaguoja su druskos rūgštimi:
Cu
Cu(OH)2
CuO
Cu(OH)2(CO3) (malachitas)
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kai kurie radijo detalių kontaktai paauksuojami. Ko siekiama?
Aktyvinti sąveiką su aplinkos medžiagomis
Didinti dirbinio atsparumą
Didinti dirbinio kainą
Apsaugoti nuo korozijos
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tarp kurių medžiagų (druskų tirpalų) galima reakcija?
Pb ir ZnSO4
Fe ir CuCl2
Zn ir MgCl2
Au ir AgNO3
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kurio metalo danga netinka laivo korpusui apsaugoti nuo korozijos?
Al
Zn
Cu
Mg
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Gamtoje randamas grynas metalas:
Pb
Al
Zn
Ag
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kuris iš šių metalų yra laikomas alyvoje?
Mg
Li
Hg
Mg
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kurį iš nurodytų metalų galima pjaustyti peiliu?
K
Al
Fe
Cu
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