19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The correct IUPAC name of the given structure of alkyne is
The IUPAC name of is CH C CH
The IUPAC name of CH CH CH is
Which of the following is correct IUPAC name of given hydrocarbon?
Aromatic compounds are
Hydrocarbons are classified depending upon the types of ...A... bonds present. Here, A refers to
Assertion: Alkyl benzene is not prepared in good yield by Friedel-Craft’s alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
Assertion: Rates of nitration of benzene and hexadeuterobenzene are different. Reason: The C—H bond is stronger than the C—D bond.
Assertion: Friedel-Craft’s reaction is used to introduce an alkyl or acyl group in the benzene nucleus. Reason: Benzene is a solvent for Friedel-Craft’s alkylation of bromobenzene.
Assertion: Alkynes are more reactive towards nucleophilic addition reaction as compared to alkenes. Reason: Alkynes contain two pi bonds, while alkenes have only one bond.
Assertion:1-butene on reaction with HBr in the presence of a peroxide produces 1-bromobutane. Reason: It involves the formation of a primary radical.
Assertion: The addition of HBr on 2-butene gives two isomeric products. Reason: Addition of HBr on 2-butene follows Markownikoff’s rule.
For the formation of toluene by Friedal Craft reaction, reactants used in presence of anhydrous AlCl3 are
Select the true statement about benzene amongst the following
Which among the following groups when attached to benzene ring will direct the incoming electrophile predominantly to the meta position? (I) – CH3 (II) –CH2Cl (III) (IV) –CCl3 (V) –NHCOCH3
Product The main product is (a) (b) (c) (d)
Ethylbenzene with bromine in presence of FeBr3, predominantly gives (a) (b) (c) (d)
An aromatic compound ‘X’ with molecular formula C8H10 on nitration gives one mononitro derivative and three dinitro derivatives. Compound ‘X’ would be
The compound X in the reaction, (a) (b) (c) (d)
Which of the following sequence of reactions (reagents) can be used for the conversion of C6H5CH2CH3 into C6H5CH=CH2?
Which is not aromatic compound? _
Among the following, the aromatic comopound is: (a) (b) (c) (d)
Reduction of 2-butyne with sodium in liquid ammonia gives predominantly :
The product A, is (a) (b) (c) (d)
Acetylenic hydrogens are acidic because