Cho dãy các chất sau: etyl axetat, triolein,  tơ visco, saccarozơ, xenlulozơ, fructozơ. Số chất trong dãy thủy phân trong dung dịch axit là   

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  practice                  blaze                 brand                 plaster

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

  blue                   prune                     bruise                   plum

• Choose a word that has different stress pattern:

  equivalent                    require                     decrease                  motivate

• Choose the best answer for the following sentence:

  The number of people receiving reading and writing lesson ____________ over 4,500 by 2001.
   

• Choose the best answer for the following sentence:

  I think it is a/an _______________ way to help them to read and write.
   

• Choose the best answer for the following sentence:

  The fight _____________ illiteracy continued in the following summer.
   

• Choose the best answer for the following sentence:

  In my opinion, more work has to be done to _____________ illiteracy in our country.
   

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

  “Don’t forget to feed the chicken twice a day, ” he said.
  
  

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

  traffic                    drank                    tradition                    drastic

• Choose a word that has different stress pattern:

  contestant                    completion                    remember                   membership