năm nay thi vào 10 là hóa à sao trong đề thi thử toàn là hóa thôi vậy
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10 tháng 4 2018
Giải thích:
Dựa vào dãy hoạt động hóa học của các kim loại ta có:
Tính khử của Cu < Zn < Mg
Đáp án C
19 tháng 9 2018
Giải thích:
Để Zn bị ăn mòn điện hóa thì kim loại tạo hợp kim với Zn phải có tính khử yếu hơn Zn
Đáp án A
20 tháng 10 2019
Giải thích:
(1) Zn + 2AgNO3 → Zn(NO3)2 + 2Ag ⇒ Chọn.
(2) Fe + Fe2(SO4)3 → 3FeSO4.
(3) 2Na + 2H2O → 2NaOH + H2
2NaOH + CuSO4 → Cu(OH)2 + Na2SO4
(4) CuO +CO → t 0 Cu + CO2 ⇒ Chọn.
Đáp án D
HB
5 tháng 7 2018
CHÚC BN THI ĐẬU NHA
I. Choose the most suitable word or group words by circling the letter A, B, C or D :
- What . . . . . . . names ? – They’re Mai and Nga .
A. are / their | B. is / your | C. are / they | D. Both (A) and (C) |
- Who are they ? - They . . . . . . . my classmates .
A. be | B. is | C. am | D. are |
- There are. . . . . . . . . ……….. students in my school this school year.
A. nine hundred and ninety-nine B. nine hundreds and ninety-nine | C. nine hundred ninety-nine D. nine hundred and ninety-nines |
- How . . . . . … you ? I am twelve years old .
A. are | B. old are | C. is | D. old is |
- What ………..they………….. ? – They’re doctors .
A. do / do | B. does / do | C. do / does | D. does / does |
- What is this ? This is . . . . . . . . . eraser.
A. a | B. the | C. an | D. Ø |
- Is this your class ? - . . . . . . . . . . . . . . . . . . . ..
A. No, that’s a house | B. This is my class | C. No , that’s my class | D. No, this is a class |
- I am ………………… brother.
A. my | B. her | C. he | D. you |
9. Where………… he ………. ?
A. do / live | B. does / lives | C. do / lives | D. does / live |
- We live ………………Le Loi street………QuyNhonCity
A. on / in | B. at / in | C. in / in | D. to /in |
- How many………………. there in your school?
A. student - is | B. students - are | C. students - is | D. are - students |
- Which word has the final sound /s /.
A. armchairs | B. names | C. thanks | D. erasers |
II. Match the questions in column A with the answers in column B
(A) | (B) | |
1. Who is that ? | a. They are telephones. | 1+ |
2. How many stools are there ? | b. No, he isn’t. | 2+ |
3. What are these ? | c. It’s my sister, Mary. | 3+ |
4. Is that your teacher ? | d. Yes, they are. | 4+ |
5. Are those your desks? | e. There are four | 5+ |
6. What is that? | f. It’s a television. | 6+ |
III. Read the passage and answer the questions :
This is a photo of my family. This is my father. He’s 40 years old. He’s a doctor. And this is my mother. She’s 35. She’s a doctor, too. These are my brother, Tom and my sister, Mary. Tom’s 10 and Mary’s 7. They’re students.
1. How many people are there in his family? ……………………………..…………………
2. How old is his father?……………………………..……………………………………….
3. What does his mother do?……………………………..…………………………………..
4. How old is his brother and his sister?……………………………..…………………….…
IV. Write the questions.
1. ………………………………………? - I am eleven years old.
2……………………………………… .? - There are four people in my family.
3. ……………………………………….? - My father is an architect.
4. ……………………………………….? - They are armchairs.
5. ……………………………………….? - No, it isn’t a pen. It’s a pencil.
6. ………………………………………? - My father’s name is Hoang.
V. Change the following sentences into plural.
1. This couch is old → ……………………………..……………………………………
2. That is Lan’s school bag. → ……………………………..……………………………………
3. There is an eraser in my box. →……………………………..……………………………………
4. the student is in the classroom → ……………………………..……………………………………
5. What is that? It’s a pen. → ……………………………..……………………………………
6. It is a stereo. → ……………………………..……………………………………
VI. Make questions for underlined words :
1. Tom’s brother is twenty-two years old ? → ……………………………..……………………………
2. There is a couch in the room. → ……………………………..……………………………
3. Hung lives in the city. → ……………………………..…………………………….
4. Thu’s father is an engineer. → ……………………………
chắc zậy đó
ai bảo năm nay thi vào 10 toàn hóa vậy thông tin sai đó
thì chắc tại bn lm đề thi thử vào 10 môn hóa lên vậy đó