
ly thuyet 10
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Chemistry
10th Grade
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37 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KMnO4 + HCl → Cl2 + MnCl2 + KCl + H2O. KMnO4 đã
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KMnO4 + HCl → Cl2 + MnCl2 + KCl + H2O. HCl đã
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydrohalic acid nào sau đây được dùng để khắc hoa văn lên thuỷ tinh?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hoá chất dùng để phân biệt hai dung dịch NaI và NaCl là
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hoá chất dùng để phân biệt hai dung dịch NaBr và KCl là
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enthalpy tạo thành chuẩn của các đơn chất bền bằng
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho phản ứng tổng quát sau: X2(g) + 2NaBr(aq) → 2NaX(aq) + Br2(aq). X là
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