
TRẮC NGHIỆM CACBON
Authored by Nguyễn Văn
Chemistry
12th Grade - University
Used 4+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Các số oxi hóa thường gặp của cacbon là:
-3, -1, 0, +4
-2, +2, 0, -3
-4, -2, 0, +2
-4, 0, +2, +4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính oxi hóa của cacbon thể hiện ở phản ứng nào trong các phản ứng sau ?
C + O2 --> CO2
2CuO + C --> 2Cu + CO2
3C + 4Al --> Al4C3
C + H2O --> CO + H2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính khử của cacbon thể hiện ở phản ứng nào trong các phản ứng sau ?
2C + Ca --> CaC2
C + CO2 --> 2CO
C + 2H2 --> CH4
3C + 4Al --> Al4C3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxit nào sau đây tạo muối ?
CO2
N2O
NO
CO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi cho dư khí CO2 vào dung dịch chứa kết tủa CaCO3, thì kết tủa tan. Tổng các hệ số tỉ lượng của chất phản ứng trong phương trình hóa học là
4
3
5
2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch chất nào vừa tác dụng với dung dịch HCl, vừa tác dụng với dung dịch NaOH ?
Na2CO3
H2SO4
NaCl
KHCO3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khí CO không khử được chất nào sau đây?
CuO
ZnO
Fe2O3
MgO
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