Cho sơ đồ phản ứng sau:         

Este X (C6H10O4) + 2NaOH X1+ X2 + X3                 

X2 + X3 C3H8O + H2O

Nhận định nào sau đây là sai ?         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  The traffic jam prevented me from going to work.
  
  

• Choose one sentence that has the same meaning as the root one:

  When they arrived, the bus had left.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:  

  remote                     control                      connect                      personal   

• Choose the word that has the underlined part pronounced differently from the rest:  

  put                       full                   June               pull

• Choose a word that has different stress pattern:

  software                   hardware                    magic               machine

• Choose a word that has different stress pattern:

  daily                receive                almost                 scenic

• Choose the best answer for the following sentence:

  Can you help me find the man __________ saved the girl?
   

• Choose the best answer for the following sentence:

  None of the students ____________ in our this problem yet.
  
  

• Choose the best answer for the following sentence:

  All of those ___________ in favour of the motion, raise your hands.
  
  

• Choose the best answer for the following sentence:

  The Internet will make it easier __________ English.