THÍ NGHIỆM
Interactive Video
•
Chemistry
•
10th Grade
•
Hard
nguyễn nguyên
Used 5+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydrohalic acid nào thường được dùng để tẩy gì sét trên bề mặt kim loại trước khi sơn, hàn, mạ điện?
HBr
HF
HI
HCl
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Có 4 dung dịch NaF, NaCl, NaBr, NaI đựng trong các lọ bị mất nhãn. Nếu dùng dung dịch AgNO3 thì có thể nhận được tối đa bao nhiêu dung dịch?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hai chất nào sau đây được cho vào muối ăn để bổ sung nguyên tố iodine?
HI, HIO3
I2, HI
KI, KIO3
KI, AlIO3
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Kết tủa trắng xuất hiện là chất nào?
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