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Out of SN1 and SN2, which reaction occurs with
(a) Inversion of configuration
(b) Racemisation
Concept: Chemical Reactions of Amines - Alkylation and Acylation
Using IUPAC norms, write the formula of Hexaamminecobalt(III) sulphate.
Concept: Nomenclature of Amines
What is the role of pyridine in the acylation reaction of amines?
Concept: Chemical Reactions of Amines - Alkylation and Acylation
An organic compound (A) with molecular formula C3H7NO on heating with Br2 and KOH forms a compound (B). Compound (B) on heating with CHCl3 and alcoholic KOH produces a foul-smelling compound (C) and on reacting with C6H5SO2Cl forms a compound (D) which is soluble in alkali. Write the structure of (A), (B), (C) and (D).
Concept: Nomenclature of Amines
Write the structures of A, B and C in the following reaction:
Concept: Chemical Reaction of Diazonium Salts - Reactions Involving Displacement of Nitrogen
Write the structures of A, B and C in the following reaction:
Concept: Chemical Reactions of Amines - Reaction with Nitrous Acid
Arrange the following in increasing order of their boiling point:
C2H5OH, C2H5NH2, (C2H5)3N
Concept: Physical Properties of Amines
Which of the following would not be a good choice for reducing nitrobenzene to aniline?
Concept: Preparation of Amines
How can the activating effect of the −NH2 group in aniline be controlled?
Concept: Chemical Reactions of Amines - Electrophilic Substitution
Illustrate Sandmeyer's reaction with an equation.
Concept: Chemical Reaction of Diazonium Salts - Reactions Involving Displacement of Nitrogen
Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.
Concept: Classification of Carbohydrates >> Monosaccahrides
Answer the following question.
Write the products obtained after the hydrolysis of lactose.
Concept: Classification of Carbohydrates >> Disaccharides
What are the hydrolysis products of sucrose?
Concept: Classification of Carbohydrates
The following questions are case-based questions. Read the passage carefully and answer the questions that follow:
| Carbohydrates are optically active polyhydroxy aldehydes and ketones. They are also called saccharides. All those carbohydrates which reduce Fehling's solution and Tollen's reagent are referred to as reducing sugars. Glucose, the most important source of energy for mammals, is obtained by the hydrolysis of starch. Vitamins are accessory food factors required in the diet. Proteins are the polymers of α-amino acids and perform various structural and dynamic functions in the organisms. Deficiency of vitamins leads to many diseases. |
Answer the following:
(a) The penta-acetate of glucose does not react with Hydroxylamine. What does it indicate? (1)
(b) Why cannot vitamin C be stored in our body? (1)
(c) Define the following as related to proteins: (2)
- Peptide linkage
- Denaturation
OR
(c) Define the following as related to carbohydrates: (2)
- Anomers
- Glycosidic linkage
Concept: Classification of Carbohydrates
Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?
Concept: Structures of Glucose
Give a reason for the following observations:
Penta-acetate of glucose does not react with hydroxylamine.
Concept: Structures of Glucose
Give a reason for the following observations:
Water soluble vitamins must be taken regularly in the diet.
Concept: Classification of Vitamins
What is the role of t-butyl peroxide in the polymerization of ethene?
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the mechanism of free radical polymerization of ethene.
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the names and structure of the monomers of the following polymers:
Nylon-6, 6
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation
