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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... read more

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... read more

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 ... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9985

Which of the following is a 3° amine? (a) 1-methylcyclohexylamine (b) Triethylamine (c) tert-butylamine ... read more

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... read more

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? ... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9988

Amongst the following, the strongest base in aqueous medium is ….. . (a) (b) (c) ... read more

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, read more

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 ... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9991

The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is …………. (a) excess &nb... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9992

Hofmann bromamide degradation reaction is shown by……… . (a) &nb... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9993

The gas evolved when methylamine reacts with nitrous acid is ….. . (a) &n... read more

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 < ... read more

NEET - Grade 12 - Chemistry - Amines - Study ref# 9995

The reaction is named as……. . (a) Sandmeyer reaction (b) Gatterma... read more

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... read more

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... read more

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... read more

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... read more

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... read more

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... read more

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.... read more

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, ... read more

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... read more

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 ... read more

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... read more

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... read more

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 ... read more

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... read more

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... read more