
Kimia Tingkatan 4 -Ulangkaji
Authored by nur zaini
Chemistry
5th - 12th Grade
30 Questions
Used 159+ times

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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jisim formula relatif bagi X karbonat terhidrat,X2CO3.10H2O adalah 286.Berapa jisim atom relatif bagi unsur X?
[Jisim atom relatif :H=1,C=12,O=16]
23
46
120
240
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nombor nukleon X adalah 40 dan ion X2+ mempunyai 18 elektron.
18
20
22
40
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara bahan berikut yang manakah mengandungi 1.204x1024 atom?
1 mol gas nitrogen
1 mol ammonia
1 mol air
1 mol argon
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
11g suatu oksida M diturunkan menjadi 6.2g logam M.Formula empirik bagi oksida M ialah:
[Jisim atom relatif:O=16,M=31]
MO
M2O
M3O2
M2O3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diberi formula ion aluminium ialah Al3+ dan ion sulfat ialah SO42-.Pilih formula kimia yang betul bagi aluminium sulfat.
Al(SO4)3
Al2(SO4)3
Al3(SO4)2
AlSO4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dalam satu eksperimen,didapati 24g unsur X bertindak balas dengan 32g sulfur membentuk sebatian.Apakah formula empirik sebatian itu?
(Jisim atom relatif ;X=6,S=32)
XS
X2S
X2S3
X4S
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Neon dan argon bersifat tidak reaktif secara kimia.Ini kerana:
Kedua-duanya mempunyai susunan elektron oktet
Kedua-duanya dari kumpulan 18 dalam jadual berkala
Kedua-duanya tertarik oleh daya tarikan van der waals yang lemah
Kedua-duanya dikenali sebagai gas adi
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