List of top Chemistry Questions on Glucose asked in CBSE Class XII

Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

Assertion (A): Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water.
Reason (R): The carbonyl group is absent in the open chain structure of glucose.

Which of the following reactions is not explained by the open chain structure of glucose?

Assertion (A) : Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water.
Reason (R) : The carbonyl group is absent in the open chain structure of glucose.

Which of the following reactions is not explained by the open chain structure of glucose?

Assertion (A) : D (+) – Glucose is dextrorotatory in nature.
Reason (R) : (+) represents dextrorotatory nature and D represents the configuration.

How will you confirm the presence of five -- OH groups in a glucose molecule, which are attached to different carbon atoms ?

Assertion (A) : D (+) – Glucose is dextrorotatory in nature. Reason (R) : (+) represents dextrorotatory nature and D represents the configuration.

How do you explain the following ? (a) Presence of a carbonyl group in glucose (b) Presence of five --OH groups in glucose

How do you explain the following? \[ (a)\;\text{Presence of a straight chain in glucose} \] \[ (b)\;\text{Presence of five }-OH\text{ groups in glucose which are attached to different carbon atoms} \]

How do you explain the following ?
(a) Presence of an aldehyde group in glucose
(b) Presence of a primary alcoholic group in glucose