19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which is most acidic of the following ?
Which one is the most reactive towards electrophilic reagent? (AFMC 2010) (a) (b) (c) (d)
In the following reaction, the product ‘R’ is CH Cl H O Hotiron tube AlCl CaC P Q R -> -> -> (AFMC 2010)
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? (NEET-II 2016) (a)
Bayer’s reagent is
The number of and -bonds in but-1-ene-3-yne are
In the compound, , the C2-C3 bond is of the type
How many isomers are possible for C4H10?
The pair of electrons in the given carbanion, CH3C≡C–, is present in which of the following orbitals? (NEET-I 2016)
Products of the following reaction ? i O3 Me C=CHCH ii CH S 3 2 -> are
Arrange the below compounds in the decreasing order of reactivity towards HBr:
In the following sequence of reactions, the alkene gives the compound B. Identify B. CH3 – CH = CH – CH3 O H O/Zn A B -> ->
Give the major product of the following reaction 3,3-dimethyl-1-butene + HCl Major
When one mole of an alkene on ozonolysis produces 2 moles of propanone, the alkene is
Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?
An alkene, on ozonolysis gives formaldehyde and acetaldehyde. The alkene is
(a) (b) (c) (d)
On catalytic reduction with H2/Pt how many alkenes will give n-butane?
The addition of HBr to 2-pentene gives
An alkene on vigorous oxidation with KMnO4 gives only acetic acid. The alkene is
In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff’s addition to alkenes because
Reaction of HBr with propene in the presence of peroxide gives
Peroxide H C CH CH HCl ->Product, the intermediate of reaction is : (a) CH CH CH (b) CH CH CH (c) CH CH CH (d) CH CH CH
2-phenyl propene on acidic hydration, gives
(a) (b) (c)