
KIMIA OSN 1
Authored by Maria Karlina
Chemistry
9th - 12th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Diantara kelompok molekul/senyawa yang tidak mengikuti kaidah oktet adalah ...
CO2 ; NH3 ; N2
BCl3 ; SiCl4 ; PCl3
Cl2 ; NaCl
I2 ; H2S ; NaCl
HBr ; N2H4
2.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Rumus struktur dari 2 bromo, 1 kloro, 3 nitro benzena adalah ….
3.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Berikut ini, kelompok mana yang hanya mengandung molekul ikatan kovalen ?
O3 ; As4
BCl3 ; SiCl4
I2 ; H2S
NH4Br ; HBr
NaCl ; H2O
4.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Tata nama senyawa yang benar dari senyawa tersebut adalah ...
3-etil-2-isopropil-3-metilpentana
3-etil-2,3 dimetil--pentana
4-etil-2,3,4-trimetilheksana
2,2-dietil-3,4-dimetilpentana
n- heksana
5.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Larutan urea [CO(NH2)2] dibuat dengan jalan melarutkan 3 gram urea ke dalam air sampai volume 250 mL. Konsentrasi larutan urea yang dibuat adalah ….
(Mr urea = 60)
0,5 M
0,4 M
0,3 M
0,2 M
0,1 M
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