ASESMEN AKHIR KLS XII

Quiz
•
Chemistry
•
12th Grade
•
Hard
Uda Azies
FREE Resource
43 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Simbol keselamatan kerja berikut berarti..
Mudah terbakar
Mudah meledak
Pengoksidasi
Beracun
Korosif
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prinsip yang mendorong efisiensi penggunaan atom dalam bahan-bahan kimia dalam proses sintesis adalah prinsip...
A. Efisiensi Energi
B. Pengurangan Limbah
C. Pemaksimalan Nilai Ekonomi Atom
D. Penggunaan Bahan Terbarukan
E. Katalisis
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dewasa ini banyak yang menggunakan bahan bangunan yang terbuat dari logam aluminium, seperti kusen pintu, kusen kaca, penyangga atap dan lain-lain. Awalnya bahan bangunan tersebut mengkilat, lambat laun akan menjadi kusam. Reaksi yang tepat dari kejadian tersebut adalah ....
2Al (s) + 3H2 (g) → 2AlH3 (s)
2Al (s) + 3Cl2 (g) → 2AlCl3 (s)
3Al (s) + O2 (g) → Al3O2 (s)
4Al (s) + O2 (g) → 2Al2O (s)
4Al(s) + 3O2(g) →2Al2O3(s)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Emas adalah salah satu logam yang sangat berharga dan biasanya digunakan sebagai perhiasan. Atom emas memiliki notasi 79Au198, maka emas tersebut mempunyai..…
76 elektron, 79 proton, 119 neutron
82 elektron, 76 proton, 119 neutron
70 elektron, 79 proton, 119 neutron
79 elektron, 82 proton, 119 neutron
82 elektron, 76 proton, 119 neutron
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Harga keempat bilangan kuantum elektron terakhir dari unsur adalah ....
A. 4 2 -2 - ½
B. 4 2 -1 - ½
C. 4 1 +1 - ½
D. 4 1 0 - ½
E. 3 2 -2 + ½
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada proses industri pengolahan logam besi terjadi reaksi: Fe2O3 (s) + CO(g) → Fe(s) + CO2(g) (belum setara) Jika dibutuhkan 16 gram besi (III) oksida, maka volume gas CO2 yang dihasilkan (STP) sebanyak ... (Jika Ar = Fe = 56 ; O = 16)
A. 1,12 L
B. 2,24 L
C. 4,48 L
D. 6,72 L
E. 11,20L
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan tabel periodik berikut! Konfigurasi elektron unsur W adalah ....
ls22s22p63s23p64s2
ls22s22p63s23p7
ls22s22p63s23p64s13p6
Is2 2s2 2p6 3s2 3p6
ls22s22p63s23p64s1
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