
Ôn hóa đề 802
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Chemistry
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Crom có số oxh +6 trong trường hợp nào sau đây?
CrO
K2Cr2O7
KCrO2
Cr2O3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây là KL kiềm thổ
Cu
Fe
Ca
Ag
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ion kim loại nào sau đây có tính oxh mạnh nhất?
Cu2+
Mg2+
Pb2+
Ag+
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Polime nào sau đây thuộc loại polime thiên nhiên?
Polietilen
PVC
polibutadien
Xenlulozo
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KIm loại nào sau đây bị thụ động trong H2SO4 đặc, nguội?
Cu
Al
Ag
Mg
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi đốt cháy các nhiên liệu hóa thạch như than đá, dầu mỏ, khí đốt thường sinh ra khí X. Khí X không màu, có mùi hắc, độc, nặng hơn KK và gây ra mưa axit. Khí X là?
SO2
N2
O2
CH4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số nguyên tử cacbon trong phân tử panmitit là?
17
18
16
15
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