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What would be the major product of the following reaction?
\[\ce{C6H5 - CH2 - OC6H5 + HBr -> A + B}\]
Concept: Introduction of Diazonium Salts
Which of the following statements is not correct for amines?
Concept: Concept of Amines >> Chemical Reactions of Amines - Reaction with Nitrous Acid
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Tertiary amines are more basic than corresponding secondary and primary amines in gaseous state.
Reason (R): Tertiary amines have three alkyl groups which cause +I effect.
Select the most appropriate answer from the options given below:
Concept: Concept of Amines >> Identification of Primary, Secondary and Tertiary Amines
Give reasons for the following observation:
Aniline is acetylated before nitration reaction.
Concept: Concept of Amines >> Chemical Reactions of Amines - Electrophilic Substitution
Give reasons for the following observation:
pKb of aniline is lower than the m-nitroaniline.
Concept: Concept of Amines >> Chemical Reactions of Amines - Basic Character of Amines
Give reasons for the following observation:
Primary amine on treatment with benzenesulphonyl chloride forms a product which is soluble in NaOH however secondary amine gives product which is insoluble in NaOH.
Concept: Concept of Amines >> Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride
Give reasons for the following observation:
Aniline does not react with methyl chloride in the presence of anhydrous AlCl3 catalyst.
Concept: Concept of Amines >> Chemical Reactions of Amines - Electrophilic Substitution
An organic compound (A) with molecular formula C2Cl3O2H is obtained when (B) reacts with Red P and Cl2. The organic compound (B) can be obtained on the reaction of methyl magnesium chloride with dry ice followed by acid hydrolysis.
- Identify A and B.
- Write down the reaction for the formation of A from B. What is this reaction called?
- Give any one method by which organic compound B can be prepared from its corresponding acid chloride.
- Which will be the more acidic compound (A) or (B)? Why?
- Write down the reaction to prepare methane from the compound (B).
Concept: Organic Compounds Containing Nitrogen Numericals
A primary amine 'A' C2H7N reacts with alkyl halide (C2H5l) to give secondary amine 'B'. 'B' reacts with C6H5SO2Cl to give a solid 'C' which is insoluble in alkali. Identify 'A', 'B', 'C' and write all the chemical reaction involved.
Concept: Concept of Amines >> Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride
Among the following, which is the strongest base?
Concept: Classification of Amines
When benzene diazonium chloride reacts with phenol, it forms a dye. This reaction is called ______.
Concept: Diazonium Salts >> Chemical Reaction of Diazonium Salts - Reactions Involving Retention of Diazo Group
Among the following, which has the highest value of pKb?
Concept: Concept of Amines >> Chemical Reactions of Amines - Basic Character of Amines
Amides can be converted into amines by the reaction named ______.
Concept: Preparation of Amines
Assertion (A): Bromination of benzoic acid, gives m-bromobenzoic acid.
Reason (R): Carboxyl group increases the electron density at the meta position.
Concept: Concept of Amines >> Chemical Reactions of Amines - Electrophilic Substitution
In the reaction \[\ce{C6H5NH2 + CHCl3 + 3KOH -> A + 3B + 3C}\] the product A is:
Concept: Concept of Amines >> Identification of Primary, Secondary and Tertiary Amines
Arrange the decreasing order of pKb values.
\[\ce{C6H5NH2, C6H5NHCH3, C6H5CH2NH2, CH3NH2, NH3}\]
Concept: Concept of Amines >> Chemical Reactions of Amines - Basic Character of Amines
Arrange the increasing order of solubility in water.
\[\ce{C2H5Cl, C2H5NH2, C2H5OH}\]
Concept: Classification of Amines
Arrange the decreasing boiling point.
\[\ce{CH3COOH, C2H5OH, CH3NH2, CH3OCH3}\]
Concept: Physical Properties of Amines
What are monosaccharides?
Concept: Biomolecules in the Cell > Carbohydrates >> Monosaccahrides
What are three types of RNA molecules which perform different functions?
Concept: Introduction of Nucleic Acids
