Carbohydrates Identification Tests
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Questions and Answers

Monosaccharides like glucose and fructose are examples of ______ sugars

reduce

Carbohydrates are the most abundant and diverse class of organic compounds occurring in ______

nature

Lactose is made up of glucose + ______

galactose

Maltose is made up of glucose + ______

<p>glucose</p> Signup and view all the answers

Sucrose is made up of glucose + ______

<p>fructose</p> Signup and view all the answers

Starch is composed of glucose + glucose + ______

<p>glucose</p> Signup and view all the answers

Carbohydrates are the most common chemical compounds used for ______

<p>food</p> Signup and view all the answers

Molisch’s test is a general test for ______

<p>carbohydrates</p> Signup and view all the answers

Fehling’s test is a qualitative test for ______ sugars

<p>reducing</p> Signup and view all the answers

Benedict’s test is given by ______ sugars in alkaline medium

<p>reducing</p> Signup and view all the answers

Benedict’s Test is given by reducing sugars in ______ medium

<p>alkaline</p> Signup and view all the answers

Iodine Test is only given by ______

<p>starch</p> Signup and view all the answers

Selwanoff's test reagent with fructose: react HCL+ heat. Polysaccharide ketohexose+ resorcinol distinguished ______

<p>aldose&amp;ketose</p> Signup and view all the answers

Carbohydrates are the most abundant and diverse class of organic compounds occurring in ______

<p>nature</p> Signup and view all the answers

Study Notes

Monosaccharides

  • Monosaccharides like glucose and fructose are examples of simple sugars

Structure of Carbohydrates

  • Lactose is made up of glucose + galactose
  • Maltose is made up of glucose + glucose
  • Sucrose is made up of glucose + fructose
  • Starch is composed of glucose + glucose + glucose

Importance of Carbohydrates

  • Carbohydrates are the most abundant and diverse class of organic compounds occurring in nature
  • Carbohydrates are the most common chemical compounds used for energy production

Tests for Carbohydrates

  • Molisch's test is a general test for carbohydrates
  • Fehling's test is a qualitative test for aldose sugars
  • Benedict's test is given by reducing sugars in alkaline medium
  • Iodine Test is only given by starch
  • Selwanoff's test reagent with fructose reacts with HCL + heat and distinguishes ketohexose from aldose sugars

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Description

This quiz covers the identification tests for carbohydrates, the most abundant and diverse class of organic compounds. It includes tests for monosaccharides, disaccharides, and polysaccharides, which are commonly used in food.

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