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NEET - Grade 12 - Chemistry - Amines - Introduction and Snapshot of Amines - Study ref# 887
Introduction: Amines constitute an important class of organic compounds derived by replacing one or more hydrogen atoms of ammonia molecule by alkyl/ aryl group(s). In nature, they occur among proteins, vitamins, alkaloids and hormones...
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NEET - Grade 12 - Chemistry - Amines - Introduction and Snapshot of Amines - Study ref# 888
Following sections must be covered to understand the Amines: 1. Structure of Amines 2. Classification 3. Nomenclature 4. Preparation of Amines 5. Physical Properties 6. Chemical Reactions 7. Method of Preparation of Diazoni...
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NEET - Grade 12 - Chemistry - Amines - Target Setup for Amines - Study ref# 889
Student requires to achieve the following milestones to get better grip over Amines. The milestones / targets are as follows: Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000%Subject ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9985
Which of the following is a 3° amine? (a) 1-methylcyclohexylamine (b) Triethylamine (c) tert-butylamine  ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9986
Which of the following is the weakest Bronsted base? Answer: (a) Aniline is weakest Bronsted base among the given four compounds due to resonance present in case of aniline. Resonating structure of aniline Hence, long pair of nitr...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9987
Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?
...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9988
Amongst the following, the strongest base in aqueous medium is ….. . (a)
(b) (c)
...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9989
In order to prepare a 1° amine from an alkyl halide with simultaneous addition of one group in the carbon chain, the reagent used as source of nitrogen is ……. (a) sodium amide , (b) sodium azide,
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9990
Amongst the given set of reactants, the most appropriate for preparing 2° amine is…….. (a)
(b)
followed by ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9991
The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is …………. (a) excess
&nb...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9992
Hofmann bromamide degradation reaction is shown by……… . (a)
&nb...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9993
The gas evolved when methylamine reacts with nitrous acid is ….. . (a)
&n...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9994
The correct increasing order of basic strength for the following compounds is ……….. . (a) II <III <I (b) III< I < II (c) III < ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9995
The reaction
is named as……. . (a) Sandmeyer reaction (b) Gatterma...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9996
Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chains is (a) Hofmann bromamide reaction (b) Gabriel phthalimide synthesis (c) Sandmeyer r...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9997
Which of the following should be most volatile? I.
II. III. IV. (a) II (b) IV (c) I (d) III Answer...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9998
The reagents that can be used to convert benzenediazonium chloride to benzene are ……… . (a)
(b) (c) &n...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 9999
Among the following amines, the strongest Bronsted base is ….. . Answer: (d) Aniline is a weaker base than due to delocalization of lone pair of electrons of the N-atom over the benzene ring pyrrole is not more basic because the...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10000
The product of the following reaction is ……. . Answer: (a, b) N-acetylaniline on reaction with in presence of acetic acid produces p-bromo N-acetyl aniline (major) and o-bromo-N acetyl aniline (minor) as follows T...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10001
Give the structure of ‘A’ in the following reaction. Hints- This problem is based on the concept of preparation of diazonium salt and its chemical properties. Answer: Complete conversion can be shown as...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10002
What is Hinsberg reagent? Answer: Benzene sulphonyl chloride is known as Hinsberg reagent. It is used to distinguish between the primary, secondary and tertiary amine....
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10003
Why benzene diazonium chloride is not stored and is used immediately after its preparation? Answer: Benzene diazonium chloride are highly unstable and stable for a very short time span in solution at low temperature. Due to its instability, ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10004
Why is
group of aniline acetylated before carrying out nitration? Answer: In order to check the activation of benzene ring by amino group, first it is acetylated with acetic anhydr...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10005
What is the best reagent to convert nitrile to primary amine? Answer: Best reagent to convert nitrile to aniline is sodium/alcohol or ...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10006
Complete the following reaction. Answer: The reaction exhibits azo-coupling reaction of phenols. Benzene diazonium chloride reacts with phenol is such a manner that the para position of phenol is coupled with diazonium salt to form p-hydroxy...
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NEET - Grade 12 - Chemistry - Amines - Study ref# 10007
How will you bring out the following conversion? Hints- This problem includes conceptual mixing of bromination, nitration and Sandmeyer’s reaction. Follow the steps to approach towards given product. Bromination of p-nitroaniline...
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NEET - Grade 12 - Chemistry - Chemistry in Everyday Life - Study ref# 10067
Which of the following is an example of liquid dishwashing detergent? Answer: (b) Liquid dishwashing detergents are non-ionic type. Non-ionic detergents do not contain any ion in their constitution. Mechanism of cleansing action of this ...
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NEET - Grade 12 - Chemistry - Chemistry in Everyday Life - Study ref# 10075
Amongst the following antihistamines, which are antacids? (a) Ranitidine (b) Brompheniramine (c) Terfenadine (d) Cimetidine Hints- This question is based on the inter-relation between the antihistamin...
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NEET - Grade 12 - Chemistry - Chemistry in Everyday Life - Study ref# 10084
Both antacids and antiallergic drugs are antihistamines but they cannot replace each other. Explain why? Answer: Histamine is a chemical substance that stimulates the secretion of pepsin and hydrochloric acid in stomach. Antacids are designe...
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