19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
On reaction with water, which of the following does not produce any hydride? (a) CaH (b) Be C (c) Mg N (d) Ca P
Ionic hydrides react with water to give
Metallic hydrides are
Which of the following metals directly combine with hydrogen gas to give a hydride?
Point out the element which has simplest atomic structure among all the elements around us in nature.
Hydrolysis of SiCl4 gives
The maximum number of hydrogen bonds formed by a water molecule in ice is
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.
In the reactions, Na/NH Lindlar catalyst + H B RC CR A -> A and B are geometrical isomers. Then
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