bai kiem tra hoá
Authored by ngọc vũ
Science
9th Grade
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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Nguyên tố hóa học nào sau đây luôn có trong phân tử hợp chất hữu cơ?
A. Oxi.
B. Hiđro.
C. Nitơ.
D. Cacbon.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Dãy các hợp chất nào sau đây là hợp chất hữu cơ?
A. CH4, C2H6, CO2.
B. C6H6, CH4, C2H5OH.
C. CH4, C2H2, CO.
D. C2H2, C2H6O, CaCO3.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Trong các chất sau, đâu là hiđrocacbon?
A. C2H5Cl.
B. CO2.
C. NaHCO3.
D. C4H10.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Hóa trị của cacbon, oxi, hiđro trong các hợp chất hữu cơ lần lượt là
A. IV, II, II.
B. IV, III, I.
C. II, IV, I.
D. IV, II, I.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Chất nào kích thích quả mau chín?
A. metan.
B. etilen.
C. khí cacbonic.
D. hơi nước.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6. Cho các hiđrocacbon sau đây: CH ≡ CH (I); CH3 ̶ CH3 (II); CH3 –CH2 – CH3 (III). Chất làm mất màu dung dịch brom ở nhiệt độ thường là
A. Chất (I).
B. Chất (III).
C. Chất (I) và (II).
D. nước. D. Chất (II) và (III).
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Dùng hóa chất nào sau đây có thể phân biệt giữa metan và etilen?
A. nước vôi trong.
B. dung dịch brom.
C. oxi.
D. nước.
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