Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Amylose is insoluble in water. Reason R : Amylose is a long linear molecule with more than 200 glucose units. In the light of the above statements, choose the correct answer from the options given below.
Both A and R are correct and R is the correct explanation of A
Both A and R are correct but R is NOT the correct explanation of A
A is correct but R is not correct
A is not correct but R is correct
Show Solution
The Correct Option isD
Solution and Explanation
To solve this question, let us analyze both the assertion and the reason separately, then determine the relationship between them.
Understanding Assertion A: The statement claims that "Amylose is insoluble in water." In reality, amylose is not completely insoluble. It is actually sparingly soluble in water. Amylose tends to form helical structures which can trap water molecules, leading to slight solubility.
Understanding Reason R: The reason given is "Amylose is a long linear molecule with more than 200 glucose units." This statement is factually correct. Amylose is indeed a linear polymer made of glucose units, typically linked by α-(1→4) glycosidic bonds.
Analyzing the Relationship:
While it is true that the linear and helical structure of amylose influences its solubility, the assertion that amylose is completely insoluble is not valid. Hence, Reason R, while true, does not serve as a correct explanation for the Assertion A.
Conclusion: The correct answer is that "A is not correct but R is correct." This is because the assertion incorrectly states the solubility property of amylose, whereas the reason provides accurate details about the molecular structure of amylose.
