KT15
Authored by Thanh Thủy Nguyễn
Chemistry
1st Grade
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24 questions
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1.
OPEN ENDED QUESTION
30 sec • Ungraded
Câu 1: Chất nào sau đây là chất điện li yếu?
A. HCl. B. HF. C. KCl. D. NH4NO3
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2.
FILL IN THE BLANK QUESTION
5 sec • 1 pt
Câu 2: Chất nào sau đây không phải là chất điện li?
A. HCl. B. NaOH. C. Cu(NO3)2. D. C6H6.
3.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Câu 3: Chất nào sau đây khi hòa tan vào nước không bị điện li?
A.CuSO4. B. C2H4. C. BaCl2. D. HBr.
4.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Câu 4: Cho các chất: NaCl, C2H4, CH3COOH, Ba(OH)2, KNO3. Số chất điện li là
A. 2. B. 4. C. 5. D. 3.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Câu 5: Chất nào sau đây là chất điện li mạnh?
A. H2S. B. CH3COOH. C. (NH4)2SO4. D. Mg(OH)2.
6.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Câu 6: Dung dịch Al2(SO4)3 (bỏ qua sự điện li của nước) có chứa các ion
A.Al3+ B.SO42-, Al2+. C.Al3+, SO42-. D.Al2(SO4)3, Al3+,
7.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Câu 7: Chất nào sau đây có tính bazơ?
A NH3 B. H2SO4. C. KCl. D. NH4Cl.
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