All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 12 Exam  >  Class 12 Questions  >  Which of the following reactions of glucose c... Start Learning for Free
SaveJoin the Discussion on the App
Which of the following reactions of glucose can be explained only by its cyclic structure?
  • a)
    Glucose forms pentaacetate.
  • b)
    Glucose reacts with hydroxylamine to form an oxime.
  • c)
    Pentaacetate of glucose does not react with hydroxylamine.
  • d)
    Glucose is oxidised by nitric acid to gluconic acid.
Correct answer is option 'C'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Verified Answer
Which of the following reactions of glucose can be explained only by i...
The pentaacetate of glucose does not react with hydroxylamine. This indicates that the aldehyde in glucose is not free and is involved in the formation of cyclic structure. Hence, this reaction of glucose can only be explained by its cyclic structure. Thus, option (iii) is correct.
Option (i) is incorrect because the capability of glucose to form pentaacetate tells us about the 5 hydroxyl group of the glucose.
Option (ii) is incorrect because this reaction confirms the presence of a carbonyl group in glucose.
Option (iv) is incorrect because this reaction indicates the presence of a primary alcohol in the glucose.
View all questions of this test
Most Upvoted Answer
Which of the following reactions of glucose can be explained only by i...
Explanation:

Cyclic structure of glucose:
Glucose has a cyclic structure due to the formation of hemiacetal linkage between the carbonyl group of the aldehyde form and the hydroxyl group present in the fifth carbon atom. This cyclic structure is also known as pyranose form.

Reaction of glucose with hydroxylamine:
Glucose reacts with hydroxylamine to form an oxime, which is a characteristic reaction of aldehydes and ketones. This reaction occurs due to the presence of the carbonyl group in glucose.

Glucose forms pentaacetate:
Glucose can form pentaacetate by reacting with acetic anhydride in the presence of an acid catalyst. This reaction occurs due to the presence of multiple hydroxyl groups in glucose, which can be acetylated.

Glucose is oxidized by nitric acid:
Glucose can be oxidized by nitric acid to form gluconic acid. This reaction occurs due to the presence of the aldehyde group in glucose, which can be oxidized to a carboxylic acid group.

Pentaacetate of glucose does not react with hydroxylamine:
The pentaacetate form of glucose does not react with hydroxylamine to form an oxime. This is because the acetylation of the hydroxyl groups in glucose prevents the reaction with hydroxylamine. The acetyl groups act as protecting groups, which block the hydroxyl groups and prevent them from reacting with other compounds. Therefore, the pentaacetate form of glucose cannot undergo the characteristic reaction of aldehydes and ketones with hydroxylamine to form an oxime.
< Previous Question Next Question >
Explore Courses for Class 12 exam

Similar Class 12 Doubts

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: Reactions can occur at different speeds.Reason: Rate of reaction is also called speed of reaction.

Read the passage given below and answer the following questions:Nucleophilic substitution reactions are of two types; substitution nucleophilic bimolecular (SN2) and substitution nucleophilic unimolecular (SN1) depending on molecules taking part in determining the rate of reaction. Reactivity of alkyl halide towards SN1 and SN2 reactions depends on various factors such as steric hindrance, stability of intermediate or transition state and polarity of solvent. SN2 reaction mechanism is favoured mostly by primary alkyl halide or transition state and polarity of solvent, SN2 reaction mechanism is favoured mostly by primary alkyl halide then secondary and then tertiary. This order is reversed in case of SN1 reactions.Q. Which of the following is most reactive towards nucleophilic substitution reaction?

Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer?
Question Description
Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following reactions of glucose can be explained only by its cyclic structure?a)Glucose forms pentaacetate.b)Glucose reacts with hydroxylamine to form an oxime.c)Pentaacetate of glucose does not react with hydroxylamine.d)Glucose is oxidised by nitric acid to gluconic acid.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up
within 7 days!
Takes less than 10 seconds to signup