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(a) (b) Carboxylic Acid and Its Derivatives (c) (d)
An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester formed will be
The strongest acid among the following is –
Assertion : Acid catalysed hydrolysis of ester is reversible on the other hand base catalysed hydrolysis is irreversible. Reason : In acid catalysed ester hydrolysis carboxylic acid is formed on which nucleophile atta…
Ethyl isocyanide on hydrolysis in acidic medium generates
The end product B in the sequence of reactions, Carboxylic Acid and Its Derivatives CN NaOH R X A B → → is
Assertion:Formic acid reduces mercuric chloride. Reason: Formic acid is stronger than acetic acid.
Assertion : Acetic acid does not give haloform reaction. Reason : Acetic acid has no -hydrogen.
Assertion : (CH₃)₃C–COOH does not give HVZ reaction. Reason : It does not have any -hydrogen
Assertion : p–hydroxybenzoic acid has a lower boiling point than o–hydroxybenzoic acid. Reason : o–hydroxybenzoic acid has intramolecular hydrogen bonding.
In the given reaction, H O C H CO O I → H O C H COOCOCH II → Identify the product(s) formed in the given reaction. I II
Assertion (A) Glucose gives reddish brown precipitate with Fehling solution. Reason (R) Reaction of glucose with Fehling solution gives CuO and gluconic acid.
Assertion: Activity of an enzyme is pH-dependent. Reason: Change in pH affects the solubility of the enzyme in water.
Assertion: Alpha -amino acids exist as internal salt in solution as they have amino and carboxylic acid groups in near vicinity. Reason: H ion given by carboxylic group (– COOH) is captured by amino group (–NH₂) havin…
Assertion: Proteins on hydrolysis produce amino acids. Reason: Amino acids contain –NH₂ and –COOH groups.
Sucrose in water is dextrorotatory, []D = + 66.4° when boiled with dil. HCl, the solution becomes laevo-rotatory, []D = – 39.9°. In this process the sucrose breaks into
Glycolysis is
Which one of the following statements is true for protein synthesis (translation) ?
The pair in which both species have iron is
Which statement is incorrect about peptide bond?
Which functional group participates in disulphide bond formation in proteins ?
The human body does not produce
The cell membranes are mainly composed of
The hormone which controls the processes like burning of fats, proteins and carbohydrates to liberate energy in the body is
Assertion: DNA molecules and all RNA molecules are found in the nucleus of a cell. Reason: On heating, the enzymes do not lose their specific activity.