KIMIA KELAS X
Quiz
•
Chemistry
•
1st - 10th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Di antara reaksi-reaksi di bawah ini yang merupakan reaksi redoks adalah ….
CuO + 2HCl → CuCl2 + H2O
CuO + H2 → Cu + H2O
NaOH + Ag+ → AgOH + Na+
Fe2O3 + 3H2SO4 → Fe2(SO4)3 + H2O
ZnO + 2HCl → ZnCl2 + H2O
Answer explanation
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Bilangan oksidasi atom S yang paling tinggi terdapat pada ….
SO2
S2O32-
S4O62-
SO42-
H2S
Answer explanation
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Bilangan oksidasi I di dalam ion IO3– adalah ….
+5
+3
+1
-1
-2
Answer explanation
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Bilangan oksidasi atom Cr yang sama dengan bilangan oksidasi atom Mn yang terdapat pada senyawa MnO42- adalah ….
CrO
CrCl3
Cr2O72–
Cr2(SO4)3
Cr(NO3)2
Answer explanation
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Bilangan oksidasi tertinggi atom mangan terdapat pada ….
MnO
MnO2
MnSO4
KMnO4
K2MnO4
Answer explanation
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Pada reaksi redoks:
MnO2 + 4HCl → MnCl + 2H2O + 2Cl2
Bilangan oksidasi Mn mengalami perubahan dari ….
+4 menjadi +2
+4 menjadi +1
+2 menjadi +4
+2 menjadi +1
+2 menjadi +4
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Di antara senyawa berikut yang atom hidrogennya mempunyai bilangan oksidasi -1 adalah ….
H2O
Fe(OH)3
AlH3
H2S
Mg(OH)2
Answer explanation
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