19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Any ring system will be ‘aromatic’ in nature if it possesses: I. planarity. II. complete delocalisation of the electrons in the ring. III. it follows Huckel Rule. Choose the correct option.
The repulsive interaction between the electron clouds, which affects stability of a conformation is termed as
Eclipsed and the staggered conformations can be represented by
The staggered form has the ...A... torsional strain and the eclipsed form has ...B... torsional strain. Here, A and B refer to
2-methyl butane on reacting with bromine in the presence of sunlight gives mainly
Br will abstract which of the hydrogen most readily.
Which of the following statement(s) is/are correct regarding structure of benzene? I. All the six carbons in benzene are sp2 hybridised. II. sp2 hybridised orbital of carbon combines with another sp2 hybridised orbi…
The highest boiling point is expected for
Which of the following has the lowest boiling point ?
When cyclohexane is poured on water, it floats, because
1-bromo-3-chlorocyclobutane when treated with two equivalents of Na, in the presence of ether which of the following will be formed? (a) (b) (c) (d)
The compound with highest boiling point is
When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is
Which of the following compounds can be best prepared by Wurtz-reaction?
X is heated with soda lime and gives ethane. X is
X is heated with soda-lime and gives propane, X is
An alkyl halide X reacts with sodium to form 3,8- dimethyldecane. What is X? (a) (b) (c) (d)
On mixing alkane with chlorine and irradiating with ultraviolet light, it forms only one monochloroalkane. The alkane is
and π bonds are obtained by ...A... and ...B... overlapping of orbitals. Here, A and B refer to
X-ray diffraction study of benzene reveals that I. It is a planar molecule. II. C–C bond lengths are of the same order which is intermediate between C–C single bond and C–C double bond, III. Benzene is reluctant to…
C4H10 and C5H12 have two and three ...A... respectively, Here, A refers to
The given structures, are
The number of chain isomers of C5H12 are
Which of the following hydrocarbons have only one structure?
Below reaction is an example of: AlCl CH CH CH CH CH CH – CH– CH | ->