{"id":22222,"date":"2024-01-11T17:21:29","date_gmt":"2024-01-11T11:51:29","guid":{"rendered":"https:\/\/apboardsolutions.in\/?p=22222"},"modified":"2024-01-12T16:22:39","modified_gmt":"2024-01-12T10:52:39","slug":"ap-inter-2nd-year-chemistry-study-material-chapter-9","status":"publish","type":"post","link":"https:\/\/apboardsolutions.in\/ap-inter-2nd-year-chemistry-study-material-chapter-9\/","title":{"rendered":"AP Inter 2nd Year Chemistry Study Material Chapter 9 Biomolecules"},"content":{"rendered":"

Andhra Pradesh BIEAP AP Inter 2nd Year Chemistry Study Material<\/a> 9th Lesson Biomolecules Textbook Questions and Answers.<\/p>\n

AP Inter 2nd Year Chemistry Study Material 9th Lesson Biomolecules<\/h2>\n

Very Short Answer Questions<\/span><\/p>\n

Question 1.
\nDefine Carbohydrates.
\nAnswer:
\nThe compounds which are primarily produced by plants and form a very large group of naturally occuring organic compounds are called Carbohydrates.
\nEg: Glucose, Fructose, Starch.
\n-H> Carbohydrates are the polyhydroxy aldehydes (or) ketones.<\/p>\n

Question 2.
\nName the different types of carbohydrates on the basis of their hydrolysis. Give one example for each.
\nAnswer:
\nOn the basis of the hydrolysis, carbohydrates are classified as<\/p>\n

    \n
  1. Monosaccharides, Eg : Glucose, fructose \"AP No saccharides<\/li>\n
  2. Oligosaccharides, Eg : Sucrose, maltose \"AP two monosaccharides<\/li>\n
  3. Polysaccharides, Eg : Starch, cellulose \"AP large number of monosaccharides.<\/li>\n<\/ol>\n

    \"AP<\/p>\n

    Question 3.
    \nWhy are sugars classified as reducing and non-reducing sugars ?
    \nAnswer:
    \nCarbohydrates that reduce Fehling’s reagent, Tollen’s reagent are called reducing sugars.
    \nEg: Glucose.
    \nCarbohydrates that doesnot reduce Fehling’s reagent, Tollen’s reagent are called non reducing sugars.
    \nEg : Sucrose.<\/p>\n

    Question 4.
    \nWhat do you understand from the names
    \n(a) aldo pentose and
    \n(b) ketoheptose ?
    \nAnswer:
    \na) Aldo pentose : If a monosaccharide contains 5 carbon atoms with aldehyde group then it is known as aldo pentose.
    \nb) Ketoheptose : If a monosaccharide contain seven carbons with a ketone group then it is called ketoheptose.<\/p>\n

    Question 5.
    \nWrite two methods of preparation of glucose.
    \nAnswer:
    \nMethods of preparations of glucose :
    \n1) From Sucrose.: Sucrose when boiled with di\/.HC\/ in alcoholic solution then glucose, fructose are obtained in equal portions.
    \n\"AP
    \n2) From Starch : Starch undergo hydrolysis, with dil. H2S04 at 393K under pressure to form glucose.
    \n\"AP<\/p>\n

    Question 6.
    \nGlucose reacts with bromine water to give gluconic acid. What information do you get from this reaction about the structure of glucose ?
    \nAnswer:
    \nGlucose reacts with bromine water to give gluconic acid. This reaction indicates that the carbonyl group present ip,glucose is an aldehyde group.
    \n\"AP<\/p>\n

    \"AP<\/p>\n

    Question 7.
    \nGlucose and gluconic acid on oxidation with nitric acid give saccharic acid. What Information do you get from this reaction about the structure of glucose ?
    \nAnswer:
    \nGlucose and gluconic acid on oxidation with nitric acid give saccharic acid. This indicates the presence of primary alcoholic (-OH) group in glucose.
    \n\"AP<\/p>\n

    Question 8.
    \nGlucose reacts with acetic anhydride to form penta acetate. What do you understand about the structure of glucose from this reaction ?
    \nAnswer:
    \nGlucose reacts with acetic anhydride to form peta acetate. It confirms the presence of five- OH groups in glucose which are attached to different carbon atoms.
    \n\"AP<\/p>\n

    Question 9.
    \nGive any two reasons to understand that glucose molecule has no open chain structure.
    \nAnswer:
    \nOpen chain structure of glucose could not explain<\/p>\n