Chemistry Class 12
Solutions to CBSE Sample Paper - Chemistry Class 12

Account for the following:

  1. There are 5 OH groups in glucose
  2. Glucose is a reducing sugar



a. Acetylation of glucose with acetic anhydride gives glucose pentaacetate which confirms the presence of five –OH groups. Since it exists as a stable compound, five –OH groups should be attached to different carbon atoms

Question 20 - Acetylation of glucose with - teachoo.jpg

b. Glucose reduces Fehlings reagent

Question 20b - Glucose reduces Fehlings reagent - teachoo.jpg

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.