Of the following amines how many can give carbyl amine reaction?

Of the following amines how many can give carbyl amine reaction?
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Of the following amines how many can give carbyl amine reaction?
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The nitrogan atom in each of the following tertiary amines may be removed as trimethyl amine by repeated Hoffmann elimination. Which of the following

Description : The nitrogan atom in each of the following tertiary amines may be removed as trimethyl amine by repeated Hoffmann elimination. Which of the following

Last Answer : The nitrogan atom in each of the following tertiary amines may be removed as trimethyl amine by repeated Hoffmann ... to accomplish this? A. B. C. D.

Only one of the following amines will lose its nitrogen atom as trimethyl amine by repeated Hofmann elimination reactions:

Description : Only one of the following amines will lose its nitrogen atom as trimethyl amine by repeated Hofmann elimination reactions:

Last Answer : Only one of the following amines will lose its nitrogen atom as trimethyl amine by repeated Hofmann elimination reactions: A. B. C. D.

Of the following reactions, how many reaction, are used for the preparation of amines? (a) `R-C-=N overset(LiAIh_(4))rarr` (b) `R-overset(O)overset(||

Description : Of the following reactions, how many reaction, are used for the preparation of amines? (a) `R-C-=N overset(LiAIh_(4))rarr` (b) `R-overset(O)overset(||

Last Answer : Of the following reactions, how many reaction, are used for the preparation of amines? (a) `R-C-=N overset( ... R-CH_(2)-NO_(2) overset(H_(2),Ni)rarr`

Why tert. Amines donot undergo acylation reaction ?

Description : Why tert. Amines donot undergo acylation reaction ?

Last Answer : Ans.-- Tert. Amines donot undergo acylation reaction because they donot have Nattached to H- atom. 

The diazonium salts are the reaction products of the reaction of nitrous acid with (a) primary aliphatic amines (b) primary aromatic amines (c) secondary aliphatic amines (d) secondary aromatic amines

Description : The diazonium salts are the reaction products of the reaction of nitrous acid with (a) primary aliphatic amines (b) primary aromatic amines (c) secondary aliphatic amines (d) secondary aromatic amines

Last Answer : primary aromatic amines

Which of the following amines will react with cyclohexanone to give enamine?

Description : Which of the following amines will react with cyclohexanone to give enamine?

Last Answer : Which of the following amines will react with cyclohexanone to give enamine? A. `CH_(3)NH_(2)` B. C. D.

Give reasons:--- a. Primary amines are more basic than ammonia. b . Sec. amines are more basic than pr.amines.

Description : Give reasons:--- a. Primary amines are more basic than ammonia. b . Sec. amines are more basic than pr.amines.

Last Answer : Ans— a. In pr. Amines, alkyl group increases electron density on the N-atom making it more basic than ammo b. In sec. amine, there are two alkyl groups increase electron density on N-atom more than N-atom in pr. amines in which there is one alkyl group. 

Which of the following statements is false about secondary amines? (a) They react with chloroform and NaOH to form isocyanides. (b) They can be prepared by reduction of isocyanides. (c) They react with acid chlorides to give substituted amides. (d) They react with ice-cold nitrous acid to give nitrosamine (yellow oil)

Description : Which of the following statements is false about secondary amines? (a) They react with chloroform and NaOH to form isocyanides. (b) They can be prepared by reduction of isocyanides. (c) They react ... give substituted amides. (d) They react with ice-cold nitrous acid to give nitrosamine (yellow oil)

Last Answer : They react with chloroform and NaOH to form isocyanides.

What is carbil amine reaction ?

Description : What is carbil amine reaction ?

Last Answer : The primary or 1 degree amine ( CH3-NH2 and aniline) reacts with chloroform and alcoholic caustic potash ( KOH) to produce methyl carbil amine ( CH3-NC) . This reaction is called carbil amine reaction.

In the hofmann-bromamide degradation reaction, the number of moles of NaOH and `Br_(2)` used per mole of amine produced are

Description : In the hofmann-bromamide degradation reaction, the number of moles of NaOH and `Br_(2)` used per mole of amine produced are

Last Answer : In the hofmann-bromamide degradation reaction, the number of moles of NaOH and `Br_(2)` used per mole of ... moles of NaOH and one mole of `Br_(2)`

When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Description : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Last Answer : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is ... is formed which can be given as: A. B. C. D.

When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Description : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Last Answer : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt ... reaction. The final product is A. B. C. D.

When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Description : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and the reaction is called diazo reaction.

Last Answer : When an primary aromatic amine is treated with `NaNO_(2)+HCI` at `0^(@)-5^(@)C`, a diazonium salt is formed and ... gt R gt S` D. `S gt R gt Q gt P`

The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Description : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the ... ` Mechanism: A. B. C. D. all of these

The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Description : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating ... : Find X and Y: A. B. C. D.

The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Description : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide

Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating ... reaction: A. 1 B. 2 C. 3 D. 4

Optically active amine having molecular formula `C_(5)H_(13)N` on reaction with `NaNO_(2)+HCI` produces, `3^(@)` optically inative alcohol. Find out s

Description : Optically active amine having molecular formula `C_(5)H_(13)N` on reaction with `NaNO_(2)+HCI` produces, `3^(@)` optically inative alcohol. Find out s

Last Answer : Optically active amine having molecular formula `C_(5)H_(13)N` on reaction with `NaNO_(2)+HCI` produces, ` ... out structures of amines: A. B. C. D.

The presence of primary amine can be confirmed by its reaction with:

Description : The presence of primary amine can be confirmed by its reaction with:

Last Answer : The presence of primary amine can be confirmed by its reaction with: A. `HNO_(2)` B. `CHCI_(3) +NaOH` C. `CS_(2)` and `HgCI_(2)` D. `H_(2)SO_(4)`

Preparation of a diazonium salt from a primary aromatic amine is known as : (a) Coupling reaction (b) Sandmeyer reaction (c) Diazotization (d) Corey-House synthesis

Description : Preparation of a diazonium salt from a primary aromatic amine is known as : (a) Coupling reaction (b) Sandmeyer reaction (c) Diazotization (d) Corey-House synthesis

Last Answer : Diazotization

How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :-

Description : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :-

Last Answer : How many amines are possible with the molecular formula `C_(4)H_(11)N` (structural isomers only) :- A. 6 B. 7 C. 8 D. 9

n-propylamine containing no secondary and tertiary amines as impurities is prepared by

Description : n-propylamine containing no secondary and tertiary amines as impurities is prepared by

Last Answer : n-propylamine containing no secondary and tertiary amines as impurities is prepared by A. Hoffmann ... n-propylchloride with ammonia D. none of these

Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is

Description : Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is

Last Answer : Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in ... reaction D. Reaction with `NH_(3)`

The strongest base in aqueous solution among the following amines is :

Description : The strongest base in aqueous solution among the following amines is :

Last Answer : The strongest base in aqueous solution among the following amines is : A. N,N- ... N-ethylethanamine C. M-methylmethanamine D. ethanamine

Which of the following amines cannot be prepared by path-I?

Description : Which of the following amines cannot be prepared by path-I?

Last Answer : Which of the following amines cannot be prepared by path-I? A. B. C. D.

Which of the following amines reacts most rapidly with

Description : Which of the following amines reacts most rapidly with

Last Answer : Which of the following amines reacts most rapidly with A. B. C. D.

Which of the following amines form `N-` nitroso derivative when treated with `NaNO_(2)` and `HCI`?

Description : Which of the following amines form `N-` nitroso derivative when treated with `NaNO_(2)` and `HCI`?

Last Answer : Which of the following amines form `N-` nitroso derivative when treated with `NaNO_(2)` and `HCI`? A. `CH_(3)NH_(2)` B. C. D.

The correct sequence regarding base strength of aliphatic amines in aqueous solution is:

Description : The correct sequence regarding base strength of aliphatic amines in aqueous solution is:

Last Answer : The correct sequence regarding base strength of aliphatic amines in aqueous solution is: A. `R_(3)N gt R_(2) NH gt ... gt R_(2)NH gt R_(3)N gt NH_(3)`

Chemically fats and oils are: (1) Triesters (2) Amines (3) Aldehydes (4) Ketons

Description : Chemically fats and oils are: (1) Triesters (2) Amines (3) Aldehydes (4) Ketons

Last Answer : (1) Triesters Explanation: Fats and oils are called triglycerides (or triacylcylgerols) because they are esters composed of three fatty acid units joined to glycerol, a trihydroxy alcohol. Fats and oils are composed of molecules known as triglycerides, which are esters.

Aromatic primary amines are not prepared by gabrial phthalimide synthesis. Why?

Description : Aromatic primary amines are not prepared by gabrial phthalimide synthesis. Why?

Last Answer : Ans:- Because aryl halides donot undergo nucleophilic substitution reaction. 

Why are amines always less acidic than comparable alcohols?

Description : Why are amines always less acidic than comparable alcohols?

Last Answer : Ans.--- Amines are less acidic than alcohols because of oxygen higher electronegative & smaller size. Therefore O-H breakes easily than N-H bond. 

Can tertiary amines undergo acetylation reactions ? Explain.

Description : Can tertiary amines undergo acetylation reactions ? Explain. 

Last Answer : For an amine to undergo acetylation, it should have a replaceable hydrogen atom. Tertiary amines cannot undergo acetylation reactions because these do not have replaceable hydrogen atom.

Write the molecular formula of some members of amines.

Description : Write the molecular formula of some members of amines.

Last Answer : Name of amine Molecular Formula 1. Methyl amine 2. Ethyl amine CH 3 NH 2 C 2 H 5 NH 2

What are amines? Write their general formula.

Description : What are amines? Write their general formula.

Last Answer : Compounds containing –NH 2 as the functional group are called amines. Their general formula is R –NH 2

Chemically hormones are (a) biogenic amines only (b) proteins, steroids and biogenic amines (c) proteins only (d) steroids only.

Description : Chemically hormones are (a) biogenic amines only (b) proteins, steroids and biogenic amines (c) proteins only (d) steroids only.

Last Answer : (b) proteins, steroids and biogenic amines

When ammonia is added to an alkyl halide, in the presence of base : (a) primary amines form (b) amides form (c) nitrated alkyl halides form (d) quaternary ammonium salts form

Description : When ammonia is added to an alkyl halide, in the presence of base : (a) primary amines form (b) amides form (c) nitrated alkyl halides form (d) quaternary ammonium salts form

Last Answer : primary amines form

Carbylamine test is given by (a) Primary amines (b) Secondary amines (c) Tertiary amines (d) None of these

Description : Carbylamine test is given by (a) Primary amines (b) Secondary amines (c) Tertiary amines (d) None of these

Last Answer : Primary amines

Which of the following amines react with nitrous acid to form nitrosoamine? (a) Ethylamine (b) Triethylamine (c) Diethylamine (d) Isopropylamine

Description : Which of the following amines react with nitrous acid to form nitrosoamine? (a) Ethylamine (b) Triethylamine (c) Diethylamine (d) Isopropylamine

Last Answer : Diethylamine

Aliphatic primary amines react with cold nitrous acid to form (a) Alcohols (b) Diazonium salts (c) Nitriles (d) Nitroalkanes

Description : Aliphatic primary amines react with cold nitrous acid to form (a) Alcohols (b) Diazonium salts (c) Nitriles (d) Nitroalkanes

Last Answer : Alcohols

Alkyl halides react with ammonia in the presence of base to form : (a) primary amines(b) nitrated alkyl halides(c) amides(d) quaternary ammonium salts

Description : Alkyl halides react with ammonia in the presence of base to form : (a) primary amines (b) nitrated alkyl halides (c) amides (d) quaternary ammonium salts

Last Answer : primary amines

Amines are generally classified as (a) Weak acids (b) Strong acids (c) Weak bases (d) Strong bases

Description : Amines are generally classified as (a) Weak acids (b) Strong acids (c) Weak bases (d) Strong bases

Last Answer : Weak bases

Which of the following statements is false about primary amines? (a) They can be prepared by reduction of nitriles with LiAlH4. (b) They do not form salts with acids(c) They react with ice-cold nitrous acid to form nitrogen gas.(d) They are basic and soluble in water

Description : Which of the following statements is false about primary amines? (a) They can be prepared by reduction of nitriles with LiAlH4. (b) They do not form salts with acids (c) They react with ice-cold nitrous acid to form nitrogen gas. (d) They are basic and soluble in water

Last Answer : They do not form salts with acids

Lucas test is used to determine the type of (a) alcohols (b) acids (c) amines (d) carbohydrates

Description : Lucas test is used to determine the type of (a) alcohols (b) acids (c) amines (d) carbohydrates

Last Answer : alcohols

The distinctive features of fluoxetine compared to the typical tricyclic antidepressants include the following except: A. It is less likely to produce cardiac arrhythmias in overdose B. It infrequently produces sedative and anticholinergic side effects C. It can elevate mood of apparently nondepressed patients suffering from chronic somatic illness D. It does not block neuronal uptake of biogenic amines

Description : The distinctive features of fluoxetine compared to the typical tricyclic antidepressants include the following except: A. It is less likely to produce cardiac arrhythmias in overdose B. It infrequently ... suffering from chronic somatic illness D. It does not block neuronal uptake of biogenic amines

Last Answer : D. It does not block neuronal uptake of biogenic amines

The following is true of selegiline: A. It does not exert antiparkinsonian action unless combined with levodopa B. It overcomes the ‘on-off ’ effect in levodopa treated advanced parkinsonian patients C. It retards the progression of Parkinson's disease D. At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

Description : The following is true of selegiline: A. It does not exert antiparkinsonian action unless combined with levodopa B. It overcomes the on-off ' effect in levodopa treated advanced parkinsonian ... D. At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

Last Answer : . At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to give a primary amine that ha

Description : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to give a primary amine that ha

Last Answer : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to ... . `II gt I gt IV gt III`

Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to give a primary amine that ha

Description : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to give a primary amine that ha

Last Answer : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to ... O)overset(||)(C)-NH_(2)`

Which of the following reduction reactions does not give an amine as product?

Description : Which of the following reduction reactions does not give an amine as product?

Last Answer : Which of the following reduction reactions does not give an amine as product? A. `R-NO_(2) underset(" ... (2)underset(Delta)overset(Zn//NH_(4)Cl)rarr`

Give 3 methods to distinguish primary amine from secondary and tertiary.

Description : Give 3 methods to distinguish primary amine from secondary and tertiary.

Last Answer : Give 3 methods to distinguish primary amine from secondary and tertiary.

Which of the following can give `1^(@)` amine?

Description : Which of the following can give `1^(@)` amine?

Last Answer : Which of the following can give `1^(@)` amine? A. `Ph-overset(CH_(3))overset(|)(CH)-OH ... overset(NaN_(3))underset(Delta)rarr overset(LiAIH_(4))rarr`

. Reduction of an imine will give an (a) Acid (b) Amide (c) Amine (d) Alcohol

Description : Reduction of an imine will give an (a) Acid (b) Amide (c) Amine (d) Alcohol

Last Answer : Amine