So sánh tính chất của glucozơ, tinh bột, saccarozơ và xenlulozơ.         

(1) Cả 4 chất đều dễ tan trong nước và đều có các nhóm -OH.         

(2) Trừ xenlulozơ, còn lại glucozơ, tinh bột, saccarozơ đều có thể tham gia phản ứng tráng bạc.         

(3) Tinh bột, saccarozơ và xenlulozơ đều được cấu tạo bởi các gốc glucôzơ         

(4) Glucozơ và saccarôzơ đều kết tinh không màu.

Trong các so sánh trên, số so sánh không đúng là         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:   

  ______he worked, the more he earned.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:  

  Long wanted to know_________in my family.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  At present, the new director_______to foster a culture of open cummunication within the company.             

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:  

  A recent survey has shown that______ increasing number of men are willing to share the housework with their wives.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:   

  Richard had to pay a fine, _____?         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  The marathon, first staged in 1896, ______ the legendary feat of a Greek soldier who carried news of victory from the battle at Marathon to Athens.  

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following sentences:

  They tell me about the film______on TV last week.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following sentences:

  Each of the guests _________ a bunch of flowers.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following sentences: 

  Let’s go to the beach this weekend, _______ ?  

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question:  

  I _____there once a long time ago and _____back since.