List of top Chemistry Questions on Hydrocarbons asked in AIIMS

trans-Pent-2-ene is polar but trans- but-2-ene is non-polar. The polarity of cis-isomer is more than trans-isomer, which are either non-polar or less polar.
Which of the following compounds is aromatic in nature?
Which of the following species is not aromatic?
Staggered conformation of ethane is $12.5\, kJ\, mol^{-1}$ more stable than the eclipsed conformation. The two conformations of ethane cannot be separated at room temperature.
What is ????in the following reaction?
When trans-2-butene is reacted with Br then product formed is
Sodium acetate on Kolbe?? electrolysis gives methane. Methyl free radical is formed at cathode.
HC $=$ C$^{-}$ is more stable than HC $=$ CH$^{-}$. HC $=$ C$^{-}$ has more s-character than HC $=$ CH$^{-}$.
Benzene on heating with conc. $H_2SO_4$ gives benzenesulphonic acid which when heated with superheated steam under pressure gives benzene. Sulphonation is a reversible process.
Which of the following gives propyne on hydrolysis?
Rates of nitration of benzene and hexadeuterobenzene are different. $C - H$ bond is stronger than $C - D$ bond.
Cyclopentadienyl anion is much more stable than allyl anion. Cyclopentadienyl anion is aromatic in character.

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : Trans-2-butene on reaction with \(Br _{2}\) gives meso-2,3-dibromobutane.

Reason (R) : The reaction involves \(syn-addition\) of bromine.

In the light of the above statements, choose the correct answer from the options given below

IUPAC name of
Which of the following is aromatic?
Toluene can be oxidised to benzoic acid by
Which of the following is the most stable alkene?
Baeyer?? reagent is used in the laboratory for
The most reactive compound, for the electrophilic nitration, is
Which of the following is not an aromatic compound?
In which of the following methane is formed?
The formation of 2-butene as a major product by dehydration of 2-butanol is in accordance with