Hydrocarbons practice · Mixed difficulty

If an alkane has number of carbon atoms equal to $n,$ then the
number of moles of oxygen required for its complete
combustion is:

Which of the following groups deactivates the benzene ring towards electrophilic substitution reaction?

Baeyer’s reagent is used in the laboratory for:

$C{H_3} - C \equiv CH\xrightarrow[{HgS{O_4}}]{{{H_2}S{O_4}}}A\xrightarrow[{}]{{{\text{Isomerisation}}}}C{H_3} - \mathop C\limits_{\begin{array}{cccccccccccccccccccc} {||} \\ O \end{array}} - C{H_3}$
Structure of $A$ and type of isomerism in the above reactions respectively.

The synthetic gas is:

Conformation of ethane in which hydrogen atoms attached to two carbon atoms are closest to each other is known as

Bromination of toluene gives

An organic compound ${\mathrm{C}_5}{\mathrm{H}_{11}}X$ on dehydrohalogenation gives pentene-2 only. What is halide?

Paraffin wax is:

Which fraction of coal-tar is rich in arene?

C – H bond energy is about101 kcal/mol for methane, ethane and other alkanes but is only77 kcal/mol for C – H bond of $\mathrm{C}{\mathrm{H}_3}$ in toluene. This is because

The general formula of a cycloalkane is

The molecule benzene can undergo a chemical reaction known as nitration.The carry out this
reaction there is need for the presence of two concentrated acids. Nitric acid is one, but
what is the other?

Assertion :-Ethyne and its derivatives give white precipate with ammonical silver nitrate solution.

Reason :- Alkynes gives white ppt with ammonical silver nitrate solution due to nucleophilic substitution reaction.

Select the incorrect statement regarding A
$C{H_3} - C \equiv CH + {H_2}OA$

In benzene, there is a delocalisation of π-electrons. Hence, each π-electron is attached by….carbon nuclei.

The energy of $\pi$ -bond in kcal is about :

The test for unsaturation is confirmed by the decolourisation of which of the following?

All alkyl halides undergo reduction process except

The treatment of calcium carbides with water gives

$o,p -$directing groups are generally:

Number of conformations possible in cyclohexane will be

In a mixture of n-hexadecane and α-methylnaphthalene the percentage of the latter is 10.The value of cetane number is:

The correct boiling point order for corresponding hydrocarbons is:

Alkanes mainly show reactions involving:

A saturated hydrocarbon is shown by ${\mathrm{C}_n}{\mathrm{H}_{10}}$ The value of carbon atom $'n'$ in this compound is:

The alkane with highest boiling point is

The $\mathrm{C\;} - \mathrm{C}$ bond order in benzene is close to:

Addition of $\mathrm{B}{\mathrm{r}_2}$ on $cis -{\kern 1pt} {\kern 1pt} \mathrm{butene} - 2$ gives :

The disappearance of the characteristic purple colour of ${KMnO}_4$ in its reaction with an alkene is the test for unsaturation. It is known as