Ammoniacal solution of Ni(CN)2 reacts with C6H6 to produce a light violet coloured crystaline compound of the formula:

(1) Ni(CN)2·C6H5

(2) C6H5CH3

(3) Ni(CN)2C6H6

(4) Ni(CN)2NH3·C6H6

Subtopic:  Amines - Preparation & Properties |
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The diazonium salt  gives,  with:

1. HCl/CuCl

2. HNO2/Cu

3. C2H5OH

4.  SnCl2/HCl

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 67%
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The reaction, C6H5N2Cl Cu2Cl2/HClC6H5Cl + N2 is called:

1. Etard's reaction

2. Sandmeyer's reaction

3. Wurtz-Fitting reaction

4. Perkin's reaction

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 91%
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Choose the correct statement from the ones given below for two anilium in:

                   

1. II is not an acceptable canonical structure because carbonium ions are less stable than ammonium ions

2. II is not an acceptable canonical structure because it is non-aromatic

3. II is not an acceptable canonical structure because the nitrogen has 10 valence electrons

4. II is an acceptable canonical structure

Subtopic:  Amines - Preparation & Properties |
 56%
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When nitrobenzene is treated with Br2 in presence of FeBr3, the major product formed is m-bromonitrobenzene. Statements which are related to obtain the m-isomer are:

(1) the relative electron density on meta carbon is more than that of ortho and para positions

(2) loss of aromaticity when Br+ attacks at the ortho and para positions and not at meta position

(3) easier loss of H+ to regain aromaticity from the meta positions than from ortho and para positions

(4) none of the above

Subtopic:  Amines - Preparation & Properties |
 70%
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In the chemical reactions,

the compounds 'A' and 'B', respectively, are:

1. Nitrobenzene and chlorobenzene

2. Nitrobenzene and fluorobenzene

3. Phenol and benzene

4. Benzene diazonium chloride and fluorobenzene

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 87%
From NCERT
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Amongst the compounds given, the one that would form a brillient coloured dye on treatment with NaNO2 in dil. HCl followed by addition to an alkaline solution of b-napthol is:

1. 

2. 

3. 

4. 

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 70%
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The presence of NH4+ radical in solution can be detected by:

1. Fehling’s solution

2. Benedict’s solution

3. Schiff's reagent

4. Nessler’s reagent

 

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 54%
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Potassium thiocyanate solution reacts with ferric chloride to give:

(1) pink colour

(2) deep blue colour

(3) green colour

(4) blood-red colour

Subtopic:  Amines - Preparation & Properties |
 55%
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An organic compound X (mol. formula C6H5O2N) has 6 carbon atoms in a ring system, three double bonds and also a nitro group as substituent X is:

1. Homocyclic but not aromatic

2. Aromatic but not homocyclic

3. Homocyclic and aromatic

4. Heterocyclic

Subtopic:  Urea & Nitro Compound |
 69%
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh