Làm lạnh 100g dung dịch KAl(SO4)2 bão hoà từ 450C xuống 300C. Tính khối lượng muối KAl(SO4)2.12H2O
kết tinh. Biết rằng độ tan của muối khan tại 450C và 300C lần lượt là 28g và 15g.

I. WORD FORM (1 pts – 0.25/each)
Give the correct form of the word in each blanket.
25. Our teacher always stresses the _____________ of careful preparation. (IMPORTANT)
26. Designers have _____________the Ao dai for ages. (MODERN)
27. Last year, we had an _____________summer holiday. (ENJOY)
28. He drives so _____________that he often has accidents. (CARELESS)

IV. GUIDED CLOZE TEST. (2 pts – 0.25/each)
Choose the correct option (A, B, C or D) that best fits each numbered space in the
following passage.
English is a very useful language. If we know English, we can go to any countries we like
(and we must be rich enough, of course). We will not (17) ________ it hard to make people
understand (18) _______ we want to say. English also help us to learn all kinds of
(19) ________. Hundreds of books are (20) ________ in English everyday in (21) ________
countries. English has also help to spread ideas and knowledge (22) _______ all corners of
the world. Therefore, English language has helped to spread better (23) _______ and
(24) ________ among countries of the world.
17. A. look B. see C. search D. find
18. A. what B. where C. when D. how
19. A. subjects B. things C. ideas D. plants
20. A. write B. wrote C. written D. writing
21. A. much B. lot of C. many D. a lots of
22. A. in B. at C. with D. to
23. A. to understand B. understanding C. misunderstanding D. understand
24. A. friend B. friendly C. friendship D. unfriendliness

III. ERROR RECOGNITIUON (0.75 PTS – 0.25/EACH)
Choose the underlined word/phrase (A,B,C or D) that needs correcting.
14. There is no water in the house. If there is, we could cook dinner for the old man.
                           A                                     B              C        D
15. Mathew, one of my best friends in Australia, plays the guitar very good.
                                                   A                           B      C                     D
16. Would you mind turning on the lights, please? It’s too dark for me to reading in here.
                                      A                                                    B           C            D

II. GRAMMAR AND STRUCTURE (2.5 pts – 0.25 pts/each)
Choose the best answer from A, B, C or D that best fits each of the following blank
spaces.
4. –Tom: – “Pass me that pen, please!” Mary: – “________”
A. Yes, please. B. No, it isn’t. C. Here you are. D. It doesn’t matter.
5. ________ it was so cold, he went out without an overcoat.
A. Although B. In spite of C. Since D. Because
6. The bridge ________ in our homeland at the moment.
A. is repairing B. is being repaired C. will be repaired D. is repaired
7. The kids are watching cartoons ________ Disney Channel.
A. in B. on C. at D. from
8. Let’s get a ________ to make sure there are no cracks in the pipe.
A. electrician B. dentist C. plumber D. architect
9. The next stage of the _______ of television is interactive TV.
A. revolution B. resolution C. discovery D. development
10. If the rice paddy are polluted, rice plants ________.
A. would die B. will die C. won’t die D. wouldn’t die
11. We are ________ thar the people have spoiled many beaches.
A. disappointing B. disappointingly C. disappointedly D. disappointed
12. Snowstorms, volcanoes, typhoons and earthquakes are ________.
A. natural disasters B. air pollution C. weather forecasts D. polluted oceans
13. Those girls will come back before dark, ________?
A. won’t they B. wouldn’t they C. didn’t they D. don’t they

I. PRONUNCIATION. (0.75 pts-0.25/each) Choose the word whose underlined part
pronounced differently from that of the others. (0.75 pts)
1. A. environment B. scientist C. advisor D. hurricane
2. A. exchanges B. encourages C. drives D. resources
3. A. honour B. hour C. happiness D. honesty

a) Tính khối lượng và số mol chất tan trong 200g dung dịch HCl
5,475%
………………………………………………………....................
……………………………………………………………………
b) Tính khối lượng và số mol chất tan trong 500 g dung dịch
H2SO4 5,88%.
………………………………………………………....................
……………………………………………………………………
c) Tính khối lượng của dung dịch, số mol, khối lượng chất tan,
nồng độ phần trăm của chất chứa trong 200ml dung dịch H2SO4
2M có khối lượng riêng là 1,6 g/ml.
………………………………………………………....................
……………………………………………………………………
………………………………………………………....................
……………………………………………………………………
………………………………………………………....................
……………………………………………………………………

a) Tính số mol chất tan trong 200ml dung dịch NaOH 2M.
……………………………………………………………………
b) Tính số mol mỗi chất tan trong 500 ml dung dịch X gồm
NaCl 0,02M và Na2SO4 0,04M.
………………………………………………………....................
……………………………………………………………………
c) Tính thể tích dung dịch NaOH 0,1M cần dùng để trung hoà
200 ml dung dịch H2SO4 0,05M. (cho sơ đồ phản ứng:
NaOH + H2SO4  Na2SO4 + H2O)
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………