Which of the following is correct regarding the stability of carbocation?

The peroxide effect in anti-Markovnikov addition involves ______.

Benzene reacts with acetyl chloride in the presence of AlCl₃ to give ______.

An aqueous solution of compound A gives ethane on electrolysis, the compound A is ______.

Which of the following is less reactive than benzene towards electrophilic substitution reactions?

Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

Why do hydrocarbon molecules with an odd number of carbon atoms have lower melting points than those with an even number of carbon atoms?

n-propylmagnesium bromide on hydrolysis gives propane. Is there any other Grignard reagent which also gives propane? If so, give its name, structure and equation for the reaction.

On converting benzene to toluene, state whether there will be a rise or fall in the melting point.

Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?

What effect does branching of an alkane chain has on its boiling point?

What happens when benzene is treated with excess of Cl₂ in presence of sunlight? Give chemical reaction.

Write the structure of the alkene which on reductive ozonolysis gives butanone and ethanol.

In the presence of peroxide, addition of HBr to propene takes place according to anti-Markownikoff's rule but peroxide effect is not seen in the case of HCl and HI. Explain.

An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one. Write structure and IUPAC name of ‘A’.

Why is Wurtz reaction not preferred for preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.

Define resonance energy. What is resonance energy of benzene?

Which of the following compounds will show cis-trans isomerism?
(CH₃)₂C=CH-C₂H₅

Write IUPAC names of the products obtained by the ozonolysis of the following compounds :
(i) Pent-2-ene
(ii) 3,4-Dimethylhept-3-ene
(iii) 2-Ethylbut-1-ene
(iv) 1-Phenylbut-1-ene

(a) What type of isomerism is shown by methoxymethane and ethanol?
(b) How will you bring out the following conversions.
(i) Acetylene to ethane
(ii) Benzene to Toluene
(iii) Ethanol to ethene?