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Câu 1: Trong các trường hợp sau đây, trường hợp nào chứa khối lượng hiđro là nhiều nhất:

A. 18 gam H2O B. 53,5 gam NH4Cl C. 63 gam HNO3 D. 40 gam NaOH

Câu 2: Trong vỏ Trái Đất, ahiđro chiếm 1% về khối lượng, silic chiếm 26 % về khối lượng, oxi chiếm 49 % về khối lượng. Nguyên tố có nhiều nguyên tử hơn trong vỏ Trái Đất là:

A. Hiđro B. Oxi C. Silic D. Nguyên tố khác

Câu 3: Đốt nóng 32 gam đồng (II) oxit rồi cho luồng khí hiđro đi qua để khử hoàn toàn lượng oxit trên. Khối lượng đồng thu được và thể tích khí hiđro (đktc) tham gia phản ứng là:

A. 28,8 gam Cu và 10,08 lít H2 B. 10,08 gam Cu và 28,8 lít H2

C. 25,6gam Cu và 8,96lít H2 D. 2,88 gam Cu và 1,008 lít H2

Câu 4: Cho khí hiđro tác dụng với 1,12 lít khí oxi (đktc). Khối lượng nước thu được là:

A. 1,8 gam B. 3,6 gam C. 18 gam D. 36 gam

Câu 5: Có một hỗn hợp A gồm (Fe2O3 và CuO), tỉ lệ về khối lượng là 2:1. Người ta dùng khí hiđro để khử 240 gam hỗn hợp A. Khối lượng Fe và Cu thu được sau phản ứng lần lượt là:

A. 116,8 gam Fe và 64 gam Cu B. 115,4 gam Fe và 64 gam Cu

C. 11,2 gam Fe và 64 gam Cu D. 112 gam Fe và 64 gam Cu

Câu 6: Dùng bao nhiêu lít khí hiđro (đktc) để khử hoàn toàn 80 gam Fe2O3 ở nhiệt độ cao?

A. 2,24 lít B. 3,36 lít C. 33,6 lít D. 22,4 lít

Câu 7: Cho luồng khí cacbon oxit (CO) đi qua 80 gam sắt (III) oxit Fe2O3, thu được 28 gam sắt. Thể tích khí CO cần dùng cho phản ứng (đktc) là:

A. 18,6 lít B. 16,8 lít C. 1,86 lít D. 1,68 lít

Câu 8: Khử hoàn toàn 32g hỗn hợp CuO và Fe2O3 bằng khí H2 thấy tạo ra 9g H2O. Khối lượng hỗn hợp kim loại thu được là? (kết quả làm tròn số)

A. 21gam B. 22 gam C. 23 gam D. 24 gam

Câu 9: Khử 21,7g HgO bằng khí H2 ở nhiệt độ cao. Khối lượng Hg thu được là? (cho Hg = 200)

A. 16 gam B. 18 gam C. 20gam D. 22 gam

Câu 10: Đốt hỗn hợp gồm 10 ml khí H2 và 10 ml khí O2. Khí nào còn dư sau phản ứng?

A. H2 dư B. O2 dư C. 2 khí vừa hết D. Không xác định được

Câu 11: Phản ứng hóa học có thể dùng để điều chế hiđro trong công nghiệp là?

A. Zn + 2 HCl ZnCl2 + H2 B. 2 H2O 2 H2 + O2

C. 2 Al + 6 HCl 2 AlCl3 + H2 D. Fe + H2SO4 FeSO4 + H2

11. A severe tropical___________ is called a typhoon.

A. drought B. rain C. flood D. storm

12. As soon as the floodwater ___________ down, people ____________ their houses.

A. went - cleaned B. had gone – cleaned C. went - had cleaned D. had gone – had cleaned

Choose the underlined part that needs correcting in each sentence below.

13. Hundreds of houses destroyed after a tornado hit the small town of Texas.

A B C D

14. The earthquake occurred at midday when many people had had lunch.

A B C D

Read the following passage and choose the option (A, B, C or D) that best answers each of the questions below.

At the top of the list of the costliest natural disasters in the history of the United States is Hurricane Katrina. Hurricane Katrina was the third strongest hurricane ever to hit the U. S. It affected 90,000 square miles in Louisiana, Mississippi, Florida, and Alabama.

The hurricane formed over the Bahamas and turned into a Category 1 hurricane by the time it hit the southeastern tip of Florida. It got stronger as it traveled across the Gulf of Mexico. It made its second landfall off the coast of southeast Louisiana on Monday, August 29, 2005. It had become a category 4 hurricane by then. The storm surge that followed caused destruction from central Florida to Texas. New Orleans, Louisiana, experienced even more damage because its levees were breeched, letting water flood a large portion of the city.

The National Weather Service warned people of the tropical monster that was heading towards the southern coast. Residents were told to expect power outages. They were told they might lose their rooftops and to expect water shortages. The National Hurricane Director was very concerned. He personally called the governors of Louisiana and Mississippi. He even called President Bush at his ranch in Texas. He spoke directly with New Orleans mayor Ray Nagin. Nagin issued an evacuation order for his city. Most people left. About eighty percent of the population evacuated. The estimate was that around 100,000 people remained in

the metro area. Some were stranded tourists; others did not own a car and had no way out. Those who were not able to leave were instructed to go to the New Orleans Convention Center and the Superdome.

15. What is the passage mainly about?

A. The history of the United States hurricanes.

B. A hurricane in the history of the United States.

C. Hurricanes in the world, especially in the United States.

D. What the United States does to prevent hurricanes.

16. According to the passage, how many people were evacuated?

A. About 80,000 people. B. About 80% of the population.

C. Around 100,000 people. D. Around 20% of the population

17. According to the passage, what is NOT true about Hurricane Katrina?

A. It is the costliest natural disaster in the history of the United States.

B. It is the third strongest hurricane ever to hit the US.

C. It affected 90,000 square miles in Louisiana, Mississippi, Florida, and Alabama.

D. It formed over the Bahamas.

Choose the sentence (A, B, C or D) that is closest in meaning to the root sentence or best combines the two given sentences

18. Is she making a big cake for the party?

A. Is a big cake being made for the party?

B. Is a big cake make for the party?

C. Is a big cake being make for the party?

D. Is a big cake be made for the party?

19. This is the first time she has been to the United Kingdom.

A. She has been to the United Kingdom for some times before.

B. She has never been to the United Kingdom before.

C. She has never been to the United Kingdom.

D. She hasn’t been to the United Kingdom.

20. I wrote a letter to my neighbours because they littered near my house.

A. Because of littering near my house, I wrote a letter to my neighbours.

B. Because of littering near my house, my neighbours wrote me a letter.

C. Since littering near my house, I wrote a letter to my neighbours.

D. I wrote a letter to my neighbours due to the fact that they tittered near my house