Q.Glucose is an aldose. Which one of the following reactions is not expected with glucose?

Step 1. This question lists four negatively-phrased statements about glucose and asks which one is actually TRUE (i.e. which reaction genuinely is 'not expected'); the other three, though phrased as denials, describe reactions that DO in fact occur.

Step 2. Option (a) 'does not form oxime' is FALSE as a denial -- §14.1.3 states directly that glucose reacts with hydroxylamine to form an oxime, confirming its aldehyde group; the reaction is expected. Option (c) 'does not form osazones' is also FALSE as a denial -- glucose's free aldehyde and adjacent -OH react with excess phenylhydrazine in the classic osazone-formation test used to identify sugars; the reaction is expected. Option (d) 'does not reduce Tollens reagent' is FALSE as a denial -- §14.1.3 states explicitly that glucose reduces Tollens' reagent to metallic silver (the silver-mirror test); the reaction is expected. …

For each option, check the underlying reaction against glucose's known chemistry (§14.1.3): three of the four denials are false because the reaction described does happen; find the one denial that is …

• Picking an option just because it is 'negatively phrased' and assumes that means it must be the 'no reaction' case -- three of the four negative statements here are actually FALSE denials of r …