Nilon-6,6 thuộc loại tơ: 

Chia sẻ

Một số câu hỏi khác cùng bài thi.

• Polime có cấu trúc mạch phân nhánh là:  

• Cho các phát biểu sau:

  (a) Polietilen được dùng nhiều làm màng mỏng, vật liệu điện, bình chứa,...

  (b) Polipeptit và nilon — 6,6 có chứa các loại nguyên tô hóa học giống nhau.

  (c) Tơ visco, tơ tằm có nguôn gốc từ polime thiên nhiên.

  Số phát biểu sai là:

• Dãy nào sau đây chỉ gồm các polime tổng hợp?

• Tơ nào sau đây thuộc loại bán tổn hợp (tơ nhân tạo)?

• Polime nào sau đây không được dùng làm chất dẻo?

• Polime nào sau đây trong thành phần có chứa nitơ?

• Polime nào sau đây được tổng hợp bằng phản ứng trùng ngưng?

• Nhựa PP (polipropilen) được tổng hợp từ: 

• Nhựa phenlonlfomandehit được điều chế bằng cách đun nóng phenol dư với dung dịch:      

• Loại tơ không phải tơ tổng hợp là  

•   Loại vật liệu polime nào sau đây có chứa nguyên tố Nitơ:         

• Nilon-6,6 thuộc loại tơ: 

• Trùng hợp vinyl xianua (acrilonitrin) thu được chất nào trong các chất sau?        

• Tơ nào sau đây thuộc loại tơ thiên nhiên?

•    

• Trong những năm 30 của thế kỉ XX, các nhà hóa học của hãng Du Pont (Mỹ) đã thông báo phát minh ra một loại vật liệu ‘‘mỏng hơn tơ nhện, bền hơn thép và đẹp hơn lụa’’. Theo thời gian, vật liệu này đã có mặt trong cuộc sống hàng ngày của con người, phổ biến trong các sản phẩm như lốp xe, dù, quần áo, tất, … Hãng Du Pont đã thu được hàng tỷ đô la mỗi năm bằng sáng chế về loại vật liệu này. Một trong số vật liệu đó là tơ nilon-6. Công thức một đoạn mạch của tơ nilon-6 là:  

• Vật liệu polime nào sau đây có chứa nguyên tố nitơ?         

• Phát biểu nào sau đây là đúng ?  

• Tên gọi của polime có công thức cho dưới đây là
  
  

• Cho các loại tơ sau: nilon-6, lapsan, visco, xenlulozơ axetat, nitron, enang. Số tơ thuộc tơ hóa học là.         

• Tơ nilon-6,6 được điều chế từ:

• Trùng hợp chất nào sau đây thu được poli (vinyl clorua)?

• Poli (metyl metacrylat) và nilon-6 được tạo thành từ các monome tương ứng là:

• Phát biểu nào sau đây đúng ?

• Cho sơ đồ phản ứng sau (đúng với tỉ lệ mol các chất): (1) X+ 2NaOH → X₁ + X₂ + H₂O. (2) X₁ + H₂SO₄ → X₃ + Na₂SO₄. (3) nX₂ + Y → Tơ lapsan + 2nH₂O. (4) X₃ + mZ → Tơ nilon-6,6 + 2mH₂O. Phân tử khối của X là: 

• Trong số các loại tơ sau: tơ nitron; tơ visco; tơ nilon-6,6; tơ lapsan. Có bao nhiêu loại tơ thuộc tơ nhân tạo (tơ bán tổng hợp) ?         

• Cho dãy các polime sau: polietilen, xenlulozơ, nilon-6,6, amilozơ, nilon-6, tơ nitron, polibutađien, tơ visco. Số polime tổng hợp có trong dãy là:

• Nhóm các vật liệu được chế tạo từ polime trùng ngưng là: 

• Monome dùng đề điều chế thủy tinh hữu cơ là :

• Polime X là chất rắn trong suốt , có khả năng cho ánh sáng truyền qua tốt nên được dùng để chế tạo thủy tinh hữu cơ plexiglas. Tên gọi của X là :

• Polime nào sau đây là polime thiên nhiên?

• Tên gọi của polime có công thức –(–CH₂–CH₂–)n– là:

• Polime có cấu trúc mạng không gian (mạng lưới) là: 

• Dãy nào sau đây gồm các polime dùng làm chất dẻo:         

• Polime nào sau đây có thành phần hóa học gồm các nguyên tố C, H và O?

• Cho sơ đồ phản ứng sau (đúng với tỉ lệ mol các chất): (1) X+ 2NaOH → X₁ + X₂ + H₂O. (2) X₁ + H₂SO₄ → X₃ + Na₂SO₄. (3) nX₂ + Y → Tơ lapsan + 2nH₂O. (4) X3 + mZ → Tơ nilon-6,6 + 2mH₂O. Phân tử khối của X là: 

• Polime nào sau đây có thành phần hóa học gồm các nguyên tố C, H và O?

• Polime X có công thức Phát biểu nào sau đây không đúng :             

• Tơ nào sau đây là tơ nhân tạo?        

• Nhóm các vật liệu được chế tạo từ polime trùng ngưng là: 

Một số câu hỏi khác có thể bạn quan tâm.

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone (24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted child unusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before he could speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747 from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 24:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone (24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted child unusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before he could speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747 from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 25:  

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone (24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted child unusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before he could speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747 from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 27:

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

  A child prodigy of four is receiving computer lessons at Brunei University, in London. Nicholas MacMahon is studying at university because he is too clever for school. A senior lecturer at the university, Valso Koshy, said that the boy was remarkably intelligent. Nicholas spoke fluently before he was one and by the time he was 18 months old, he was taking telephone (24) _______. This was soon followed by conversational French. These are the trademarks of a highly gifted child unusual but not unique. The strange thing about Nicholas is his reading - he taught himself to read before he could speak. Ms. Koshy, an expert (25) _______ gifted children, says Nicholas is quite exceptional. Yet “exceptional” underrates his amazing ability to read, almost from birth. “He was talking when he was one and we realized from the start that he could read,” his father said. “Soon after, he was correcting my spelling, words (26) _______ caterpillar. Now he (27) _______ insects by their Latin names.” The list of achievements is impressive, but frightening. A four-year-old who can (28) _______ a Boeing 747 from a DC 10, devours encyclopedias, read The Daily Telegraph and is well on the way to becoming a violin virtuoso is hardly normal.

  Question 28:

• Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

   In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

  Question 33:         

• Read the passage and mark A, B, C, or D to indicate the correct answer to each of the blanks.

  In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.  

  Question 34:

• Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

   In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

  Question 35:             

• Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 46 to 50:

  Here are tips that help succeed in your job interview: Always arrive early. If you do not know (46) _________ the organization is located, call for exact directions (47) ____________ advance. Leave some extra time for any traffic, parking, or unexpected events. If you are running late, call right away and let someone know. The best time to arrive is approximately 5 - 10 minutes early. Give yourself the time to read your resume one more time, to catch your breath, and to be ready for the interview. Once you are at the office, treat everyone you encounter with respect. Be (48) _________ to everyone as soon as you walk in the door. Wear a professional business suit. This point should be emphasized enough. First (49) ____________ are extremely important in the interview process. Women should (50)_________ wearing too much jewelry or make up. Men should avoid flashy suits or wearing too much perfume. It is also important that you feel comfortable. While a suit is the standard interview attire in a business environment, if you think it is an informal environment, call before and ask. Regardless, you can never be overdressed if you are wearing a tailored suit.

  Question 46:

• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 19 to 23:

  Schools in the United States have not always had a large number of libraries. As recently as 1958 about half of the public schools in the United States had no libraries at all. The (19)_______of public school libraries increased dramatically when the federal government passed the Elementary and Secondary Education Act of 1965, which provided funds for school districts to improve their education programs and facilities, including their libraries. (20) _______, many educators claim that since the legislation was passed federal spending has not increased sufficiently to meet the rising cost of new library technologies such as computer databases and Internet access. Because the federal government provides only limited funds to schools, individual school districts (21)______ on funds from local property taxes to meet the vast majority of public schools tend to reflect the financial capabilities of the communities in which they are located. Districts in wealthy suburbs often have fully staffed libraries (22)________ abundant resources, spacious facilities, and curricular and instructional support. In (23) __________, school districts in many poor areas house their libraries in ordinary classrooms or in small rooms. The libraries in such areas are generally staffed by volunteers, who organize and maintain books that are often out-of-date, irrelevant, or damaged. 

  Question 20:

• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 19 to 23:

  Schools in the United States have not always had a large number of libraries. As recently as 1958 about half of the public schools in the United States had no libraries at all. The (19)_______of public school libraries increased dramatically when the federal government passed the Elementary and Secondary Education Act of 1965, which provided funds for school districts to improve their education programs and facilities, including their libraries. (20) _______, many educators claim that since the legislation was passed federal spending has not increased sufficiently to meet the rising cost of new library technologies such as computer databases and Internet access. Because the federal government provides only limited funds to schools, individual school districts (21)______ on funds from local property taxes to meet the vast majority of public schools tend to reflect the financial capabilities of the communities in which they are located. Districts in wealthy suburbs often have fully staffed libraries (22)________ abundant resources, spacious facilities, and curricular and instructional support. In (23) __________, school districts in many poor areas house their libraries in ordinary classrooms or in small rooms. The libraries in such areas are generally staffed by volunteers, who organize and maintain books that are often out-of-date, irrelevant, or damaged. 

  Question 22: