Amin R Có Công Thức Phân Tử Là C7H9N. Số đồng ... - Cungthi.online
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Câu hỏi Hóa học
Amin R có công thức phân tử là C7H9N. Số đồng phân amin thơm của R là ?
A.4.
B.5.
C.6.
D.3.
Đáp án và lời giải Đáp án:A Lời giải:Amin thơm là amin có nguyên tử N liên kết trực tiếp với C trong vòng benzen. Các đồng phân amin thơm có CTPT là C7H9N là:
VẬY ĐÁP ÁN LÀ A
Câu hỏi thuộc đề thi sau. Bạn có muốn thi thử?
Bài tập trắc nghiệm 45 phút Khái niệm, cấu tạo, đồng phân, danh pháp - Hóa học 12 - Đề số 1
Làm bàiChia sẻ
Một số câu hỏi khác cùng bài thi.
-
Hợp chất H2NCH2COOH có tên là:
-
Axit nào sau đây thuộc loại aminoaxit?
-
Alanin có công thức là
-
Tên gọi của của C2H5NH2 là:
-
Số amin bậc 2 có công thức phân tử C4H11N là ?
-
4,725 etyl amin tác dụng với dung dịch FeCl3 dư, kết thúc phản ứng thu được bao nhiêu gam tủa
- Phát biểu nào sau đây không đúng?
-
Số đồng phân cấu tạo ứng với amin có công thức phân tử C4H11N là.
-
Hợp chất H2N-CH(CH3)-COOH có tên gọi là:
-
C7H9N có bao nhiêu đồng phân chứa vòng benzen ?
-
Số đồng phân amin có vòng benzen có công thức phân tử C7H9N là :
-
Số công thức cấu tạo của amin bậc 1 ứng với công thức phân tử là:
-
Công thức H2NCH2COOH có tên là:
-
Cho 3,75 gam amino axit X tác dụng vừa hết với dung dịch NaOH thu được 4,85 gam muối. Công thức của X là:
-
Số đồng phân cấu tạo ứng với amin có công thức phân tử C4H11N là.
-
Trong phân tử Gly-Ala, aminoaxit đầu C chứa nhóm:
-
Số amin có công thức phân tử C3H9N là
-
Cho 10 gam amin đơn chức X phản ứng hoàn toàn với HCl (dư), thu được 15 gam muối. Số đồng phân amin bậc 2 của X là
-
Amin R có công thức phân tử là C7H9N. Số đồng phân amin thơm của R là ?
-
Hợp chất H2NCH(CH3)COOH có tên gọi là:
-
X có công thức C4H14O3N2. Khi cho X tác dụng với dung dịch NaOH thì thu được hỗn hợp Y gồm 2 khí ở điều kiện thường và đều có khả năng làm xanh quỳ tím ẩm. Số công thức cấu tạo phù hợp của X là ?
-
Ảnh hưởng của gốc C6H5 đến nhóm NH2 trong phân tử anilin thể hiện qua phản ứng giữa anilin với chất nào sau đây?
-
Số đồng phân cấu tạo ứng với amin có công thức phân tử C4H11N là ?
-
Số đồng phân amin bậc 1, mạch thẳng có công thức phân tử C5H13N là:
-
Amin X có công thức phân tử C5H13N. Số amin bậc III của X là :
Một số câu hỏi khác có thể bạn quan tâm.
-
Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Aren't you putting the cart before the horse by deciding what to wear for the wedding before you've even been invited to it?
-
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.
Human beings are extremely diverse in very many ways. People differ (23)___opinions, race, nationality, gender, age, sexuality, ethnicity, class, religion, lifestyle and so much more, yet at the very basic we are all human species. Ideally, all people feel (24)______and joy despite the differences. Today, the changes in time and technology have made is extremely impossible for any group of people to live without interacting with others outside their group. Often people of different cultural and geographical (25)________meet in international conferences, education exchange programs, sports, etc.
Sadly, the history of mankind discriminating against each other based on cultural differences has been with us for ages. So many people have died or have been denied their rights (26) _____individual greed. Properties and economies have also been destroyed due to lack of understanding. Unfortunately, some of these occurrences are visible even today, perpetuated by people who little understand the importance of the (27)_______of our diversity.
Điền vào ô 23.
-
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.
Human beings are extremely diverse in very many ways. People differ (23)___opinions, race, nationality, gender, age, sexuality, ethnicity, class, religion, lifestyle and so much more, yet at the very basic we are all human species. Ideally, all people feel (24)______and joy despite the differences. Today, the changes in time and technology have made is extremely impossible for any group of people to live without interacting with others outside their group. Often people of different cultural and geographical (25)________meet in international conferences, education exchange programs, sports, etc.
Sadly, the history of mankind discriminating against each other based on cultural differences has been with us for ages. So many people have died or have been denied their rights (26) _____individual greed. Properties and economies have also been destroyed due to lack of understanding. Unfortunately, some of these occurrences are visible even today, perpetuated by people who little understand the importance of the (27)_______of our diversity.
Điền vào ô 24.
-
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.
Human beings are extremely diverse in very many ways. People differ (23)___opinions, race, nationality, gender, age, sexuality, ethnicity, class, religion, lifestyle and so much more, yet at the very basic we are all human species. Ideally, all people feel (24)______and joy despite the differences. Today, the changes in time and technology have made is extremely impossible for any group of people to live without interacting with others outside their group. Often people of different cultural and geographical (25)________meet in international conferences, education exchange programs, sports, etc.
Sadly, the history of mankind discriminating against each other based on cultural differences has been with us for ages. So many people have died or have been denied their rights (26) _____individual greed. Properties and economies have also been destroyed due to lack of understanding. Unfortunately, some of these occurrences are visible even today, perpetuated by people who little understand the importance of the (27)_______of our diversity.
Điền vào ô 25.
-
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.
Human beings are extremely diverse in very many ways. People differ (23)___opinions, race, nationality, gender, age, sexuality, ethnicity, class, religion, lifestyle and so much more, yet at the very basic we are all human species. Ideally, all people feel (24)______and joy despite the differences. Today, the changes in time and technology have made is extremely impossible for any group of people to live without interacting with others outside their group. Often people of different cultural and geographical (25)________meet in international conferences, education exchange programs, sports, etc.
Sadly, the history of mankind discriminating against each other based on cultural differences has been with us for ages. So many people have died or have been denied their rights (26) _____individual greed. Properties and economies have also been destroyed due to lack of understanding. Unfortunately, some of these occurrences are visible even today, perpetuated by people who little understand the importance of the (27)_______of our diversity.
Điền vào ô 26.
-
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.
Human beings are extremely diverse in very many ways. People differ (23)___opinions, race, nationality, gender, age, sexuality, ethnicity, class, religion, lifestyle and so much more, yet at the very basic we are all human species. Ideally, all people feel (24)______and joy despite the differences. Today, the changes in time and technology have made is extremely impossible for any group of people to live without interacting with others outside their group. Often people of different cultural and geographical (25)________meet in international conferences, education exchange programs, sports, etc.
Sadly, the history of mankind discriminating against each other based on cultural differences has been with us for ages. So many people have died or have been denied their rights (26) _____individual greed. Properties and economies have also been destroyed due to lack of understanding. Unfortunately, some of these occurrences are visible even today, perpetuated by people who little understand the importance of the (27)_______of our diversity.
Điền vào ô 27.
-
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
The innovators behind objects like the cellphone or the helicopter took inspiration from work like "Star Trek" and “War of the Worlds”.
-
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
How many people know that the Brooklyn Bridge, built in 1883, were the world's first suspension bridge?
-
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
It is said that the accident seemed to have destroyed completely his confidence.
-
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
The best explainer videos are realized by great background score. When was the last time you watched a silent movie? Never? Not for a while? A long while? Even if you remember watching one, it would still have had a background score, or you’ve accidentally pressed the mute button!
The importance of background music and sound effects for your explainer video, therefore, cannot be overstated. You may not need a full blown orchestra or classy jazz tones to create the mood, but whether going for a subtle effect, a professional demonstration or simply trying to attract customers, music is a must. Explainer videos have the emotional quotient working for them and music is just going to add more to make the viewers relate to the pain points you are highlighting in your video. Imagine if your favorite video game has no background music or sound effects to back the amazing graphics? Would you play it with the same feel and excitement? Nah! Same is the case with your explainer videos. They need to and should have apt sound effects to make them worth your viewer’s time.
While the focus of explainer videos production is more on passing the desired information and explaining technical and complex procedures easily, it doesn’t mean you’ll be distracting your viewers with the background music. The sound effects and music is not going to take the message away from your explainer, it’s just going to enhance it and turn it more watchable and share-able. Even if your video doesn’t require a background score, it must include some sound effects or else it would be not so good an experience for those who choose to watch it.
Which best serves as the title for the passage?
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