Seleksi OSN Kimia Tingkat Sekolah
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Dina Ma'rifah
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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 34,2 gram Al2 (SO4 )3 dilarutkan dalam air hingga volumenya menjadi 250 mL. konsentrasi larutan tersebut adalah….(Ar : Al = 27, S=32, O= 16)
0,04 M
0,1 M
0,4 M
1 M
4M
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui unsur-unsur 11P, 12Q, 13R, 19S, 20T. Unsur-unsur yang terdapat dalam satu golongan adalah…
P dan Q
Q dan R
R dan S
S dan T
Q dan T
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Unsur 52R26 dalam tabel periodik terletak pada golongan dan periode secara berurutan adalah ...
VIIIB, 4
VIIIA, 3
VIB, 3
VIB, 4
VIA, 3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada isotop unsur 65Zn30 dan 209Bi83, jumlah proton dan neutron kedua unsur tersebut berturut-turut adalah ...
(30,30) dan (83,126)
(35,30) dan (85,209)
(30,35) dan (83,126)
(30,35) dan (83,129)
(30,35) dan (83,209)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan perubahan materi yang terjadi di bawah ini:
(1) Besi berkarat (4) kamper menyublim
(2) Fotosintesis (5) bensin menguap
(3) Fermentasi
Perubahan materi yang menunjukkan perubahan kimia adalah…
1,2,3
1,3,5
2,3,5
2,4,5
3,4,5
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Konfigurasi elektron unsur X adalah :
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
Dalam sistem periodik unsur, X terletak pada ...
golongan IVA periode 4
golongan VIA periode 4
golongan IVB periode 4
golongan IVB periode 4
golongan VIIIA periode 4
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suatu elektron menempati subkulit 4p. Nilai bilangan kuantum yang mungkin adalah .…..
n = 4, l = 2, m = 0, s = +1/2
n = 4, l = 1, m = +1, s = +1/2
n = 4, l = 2, m = +1, s = -1/2
n = 3, l = 2, m = 0, s = +1/2
n = 3, l = 1, m = 0, s = +1/2
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