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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:
(a) The presence of m-directing groups in benzene nucleus simply decreases electron density at o- and p-, whereas no change in electron density at m-position is noticed.
The presence of N radical in solution can be detected by:
+7KI + K+ + 3H2O.
Potassium thiocyanate solution reacts with ferric chloride to give:
When potassium thiocyanate (KSCN) solution reacts with ferric chloride (FeCl3), it forms a blood-red colored complex ion called the thiocyanate ion [Fe(SCN)]2+. This reaction is used as a test for Fe3+ ions and is known as the Prussian blue test.
An organic compound X (mol. formula C6H5O2N) has 6 carbons in a ring system, three double bonds and also a nitro group as substituent X is:
The given organic compound with the molecular formula C6H5O2N has 6 carbon atoms in a ring system, three double bonds, and a nitro group (-NO2) as a substituent. This compound is nitrobenzene, which is both homocyclic (contains only carbon atoms in the ring) and aromatic.
Which of the following reactions is appropriate for converting acetamide to methanamine ?
The Hofmann bromamide reaction is a method for converting an amide into an alkylamine with one more carbon atom than the starting material. It involves treating the amide with bromine and then an alkoxide base, and is the appropriate reaction for converting acetamide to methanamine.
The correct statement regarding the basicity of arylamines is
Arylamines are generally less basic than alkylamines because the nitrogen lone pair electrons in arylamines are delocalized by interaction with the aromatic ring π-electron system, making the nitrogen atom less available for protonation, which reduces the basicity.
The electrolytic reduction of nitrobenzene in strongly acidic medium produces
Method by which aniline cannot be prepared is
Due to resonance in chlorobenzene C-Cl bond acquires double bond character hence, C-Cl bond is inert towards nucleophile (phthalimide ion).
Which of the following will be most stable diazonium salt ?
The stability of diazonium salts increases with an increase in the delocalization of the positive charge over the aromatic ring. The benzene diazonium salt (o2) is more stable than the aliphatic diazonium salts (o1 and o3) due to better delocalization of the positive charge.
Which one of the following is an amine hormone ?
The hormone which is proteinous in nature are said to be amine hormone because protein are the polymers of polypeptides and polypeptides are made up of amino acids. Amino acid contains amino group.
Thyroxin is an amine hormone. It is secreted by thyroid gland. Its function is to control the metabolism of carbohydrates, proteind and lipids.
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