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minh hong

Chủ đề:

Chương 5. Nhóm Halogen

Câu hỏi:

ÔN TẬP: NHÓM HALOGEN (2)
Câu 1: Nguyên tố halogen có tính oxi hóa yếu nhất là
A. flo. B. iot. C. brom. D. clo.
Câu 2: Chất nào sau đây tác dụng được với khí clo?
A. CaCl2. B. MnO2. C. H2O. D. O2.
Câu 3: Khi nhỏ vài giọt phenolphatalein vào cốc đựng dung dịch HCl thì dung dịch thu được sẽ
A. không màu. B. có màu xanh. C. có màu tím. D. có màu đỏ.
Câu 4: Clorua vôi là muối hỗn tạp vì
A. trong phân tử có hai gốc axit khác nhau.
B. nó dễ bị phân hủy.
C. trong phân tử có hai nguyên tử clo ở trạng thái oxi hóa +1.
D. nó có tính tẩy màu.
Câu 5: Axit nào sau đây có tính axit mạnh nhất?
A. HCl. B. HI. C. HBr. D. HF.
Câu 6: Nguyên tố halogen luôn có số oxi hóa âm trong mọi hợp chất là
A. flo. B. iot. C. brom. D. clo.
Câu 7: Khí hidro clorua khi gặp giấy quỳ tím khô thì làm quỳ tím
A. không chuyển màu. B. chuyển sang không màu.
C. chuyển sang màu xanh. D. chuyển sang màu đỏ.
Câu 8: Nếu lấy cùng số mol: MnO2, KMnO4, CaOCl2, KClO3 cho tác dụng hết với dung dịch
HCl đặc thì chất tạo được nhiều khí clo hơn là
A. MnO2 . B. KMnO4. C. KClO3 D. CaOCl2.
Câu 9: Cho các chất sau: FeO, Fe, Cu, KMnO4, KOH, Ba(NO3)2, K2SO3. Có bao nhiêu chất
phản ứng được với dung dịch HCl?
A. 6 B. 4 C. 5 D. 3
Câu 10: Kim loại nào sau đây đều tác dụng được với cả HCl và Cl2 tạo cùng một muối?
A. Ag. B. Zn. C. Fe. D. Cu.
Câu 11: Muối nào sau đây tác dụng được với dung dịch HCl?
A. CaCl2. B. Al(NO3)3. C. Na2CO3. D. Na2SO4.
Câu 12: Đơn chất nào sau đây có màu tím đen?
A. Cl2. B. F2. C. Br2. D. I2.
Câu 13: Cho 4 đơn chất sau: F2; Cl2; Br2; I2. Chất có nhiệt độ sôi thấp nhất là
A. Cl2. B. F2. C. Br2. D. I2.
Câu 14: Khí clo cómàu
A. vàng lục. B. lục nhạt. C. tím. D. nâu đỏ.
Câu 15: Axit hipoclorơ có công thức nào sau đây?
A. HClO3. B. HClO. C. HClO4. D. HClO2.
Câu 16: Trong công nghiệp, người ta thường điều chế clo bằng cách
A. điện phân nóng chảy NaCl.
B. điện phân dung dịch NaCl có màng ngăn.
C. cho F2 đẩy Cl2 ra khỏi dung dịch NaCl.
D. cho HCl đặc tác dụng với MnO2; đun nóng.
Câu 17: Công thức phân tử của clorua vôi là
A. CaCl2O3. B. CaClO. C. CaOCl2 D. Ca(OCl)2.

minh hong

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become nothing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses ________________. A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.
minh hong

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become n othing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses ________________. A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.
minh hong

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

ead the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. Last week I made the mistake of visiting the village where I grew up. It was a small, friendly community with two farms and a number of old cottages round the village green. I realized very quickly that although in many ways it appears unchanged, in reality hardly anything is the same. All the pretty cottages are there, of course, and both the picturesque farmhouses. But none of the inhabitants are country people. All of them are commuters, who leave early every morning for the nearby town. Neither of the farmhouses is attached to a farm these days; the land has been sold and is managed by somebody in an office somewhere who has little interest in the village itself. There are a few new houses, but they have no local character; you can see the same style anywhere in the country. The whole of the village, in fact, has been tidied up so much that it has become nothing more than just another suburb. 1. When the writer revisited his village, he quickly realized that _____________. A. the village changed a lot in appearance B. everything has almost changed C. all the pretty cottages as well as the farmhouses have been built D. the residents of the village are all commuters 2. Neither of the farmhouses _______________ A. has a connection with a farm B. has been sold C. is attached to the farmers. D. is managed by the commuters 3. The word “managed” in the line 8 can be best replaced by ______________. A. controlled B. spent C. used D. taken 4. According to the writer, __________________. A. the village now has no local character B. all the new houses are the same style C. the village is tidier than it used to D. the village has become nothing but a suburb 5. Which of the following is NOT MENTIONED in the passage? A. The writer has visited the village several times before. B. The writer revisited his village last week. C. In fact, the village has changed much. D. The village nowadays has become another suburb.