324821
Which of the following component in starch is water insoluble?
1 Amylopectin
2 Amylose
3 Both amylose and amylopectin
4 Glucose
Explanation:
Amylose is water soluble and amylopectin is water insoluble component in starch.
CHXII14:BIOMOLECULES
324822
On hydrolysis of starch, we finally get
1 glucose
2 fructose
3 Both (1) and (2)
4 sucrose
Explanation:
Starch is a polymer of D-glucose units, thus on hydrolysis it gives glucose only.
CHXII14:BIOMOLECULES
324823
Assertion : In the iodometric titration, starch is used as an indicator. Reason : Starch is a polysaccharide.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Starch \(\left(\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5}\right)_{\mathrm{n}}\) is a polysaccharide. It consists two fractions, one is known as \(\alpha\)- amylose and the other is \(\beta\)-amylose or amylopectin. In iodometric titrations, strach solution is used as an indicator. It gives blue or violet colour with free iodine. At the end point, the blue or violet colour disappears when iodine is completely changed to iodide. So, option (2) is correct.
324821
Which of the following component in starch is water insoluble?
1 Amylopectin
2 Amylose
3 Both amylose and amylopectin
4 Glucose
Explanation:
Amylose is water soluble and amylopectin is water insoluble component in starch.
CHXII14:BIOMOLECULES
324822
On hydrolysis of starch, we finally get
1 glucose
2 fructose
3 Both (1) and (2)
4 sucrose
Explanation:
Starch is a polymer of D-glucose units, thus on hydrolysis it gives glucose only.
CHXII14:BIOMOLECULES
324823
Assertion : In the iodometric titration, starch is used as an indicator. Reason : Starch is a polysaccharide.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Starch \(\left(\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5}\right)_{\mathrm{n}}\) is a polysaccharide. It consists two fractions, one is known as \(\alpha\)- amylose and the other is \(\beta\)-amylose or amylopectin. In iodometric titrations, strach solution is used as an indicator. It gives blue or violet colour with free iodine. At the end point, the blue or violet colour disappears when iodine is completely changed to iodide. So, option (2) is correct.
324821
Which of the following component in starch is water insoluble?
1 Amylopectin
2 Amylose
3 Both amylose and amylopectin
4 Glucose
Explanation:
Amylose is water soluble and amylopectin is water insoluble component in starch.
CHXII14:BIOMOLECULES
324822
On hydrolysis of starch, we finally get
1 glucose
2 fructose
3 Both (1) and (2)
4 sucrose
Explanation:
Starch is a polymer of D-glucose units, thus on hydrolysis it gives glucose only.
CHXII14:BIOMOLECULES
324823
Assertion : In the iodometric titration, starch is used as an indicator. Reason : Starch is a polysaccharide.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Starch \(\left(\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5}\right)_{\mathrm{n}}\) is a polysaccharide. It consists two fractions, one is known as \(\alpha\)- amylose and the other is \(\beta\)-amylose or amylopectin. In iodometric titrations, strach solution is used as an indicator. It gives blue or violet colour with free iodine. At the end point, the blue or violet colour disappears when iodine is completely changed to iodide. So, option (2) is correct.
324821
Which of the following component in starch is water insoluble?
1 Amylopectin
2 Amylose
3 Both amylose and amylopectin
4 Glucose
Explanation:
Amylose is water soluble and amylopectin is water insoluble component in starch.
CHXII14:BIOMOLECULES
324822
On hydrolysis of starch, we finally get
1 glucose
2 fructose
3 Both (1) and (2)
4 sucrose
Explanation:
Starch is a polymer of D-glucose units, thus on hydrolysis it gives glucose only.
CHXII14:BIOMOLECULES
324823
Assertion : In the iodometric titration, starch is used as an indicator. Reason : Starch is a polysaccharide.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Starch \(\left(\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5}\right)_{\mathrm{n}}\) is a polysaccharide. It consists two fractions, one is known as \(\alpha\)- amylose and the other is \(\beta\)-amylose or amylopectin. In iodometric titrations, strach solution is used as an indicator. It gives blue or violet colour with free iodine. At the end point, the blue or violet colour disappears when iodine is completely changed to iodide. So, option (2) is correct.
