Hydrocarbons

Cumene on oxidation in air gives a compound, $X$. This on reaction with dilute acid gives $Y$ and $Z . Y$ reacts with sodium metal and not $Z$. What is $Z$ ?

Chlorobenzene when subjected to fittig reaction gives a compound ' $X$ '. The sum of $\sigma$ and $\pi$ - bonds in $X$ is

\(\text { Match the following }\)

The correct answer is

$$ \begin{aligned} &\text { What are } X \text { and } Y \text { in the following reaction sequence? }\\ &\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O} \xrightarrow[573 \mathrm{~K}]{\mathrm{Cu}} \mathrm{C}_5 \mathrm{H}_{10} \xrightarrow[\text { (...

' $X$ ' is the isomer of $\mathrm{C}_6 \mathrm{H}_{14}$. It has four primary carbons and two tertiary carbons, ' $X$ ' can be prepared from which of the following reactions?

An alkyne has the molecular formula $\mathrm{C}_6 \mathrm{H}_{10}$. The number of 1 -alkyne isomers (excluding stereoisomers) possible for it is

Arrange the following in decreasing order of their boiling points
(A) 2-methylbutane
(B) 2, 2-dimethyl propane
(C) Pentane
(D) Hexane

\(\left(\mathrm{CH}_3\right)_3 \mathrm{CH} \xrightarrow{\mathrm{KMnO}_4} X \xrightarrow[573 \mathrm{~K}]{\mathrm{Cu}} Y\)
The number of $s p^3$ and $s p^2$ carbons in $Y$ are respectively

Consider the following sequence of reaction. In ' $Z$ ' the number of $s p^3$ carbons is ' $a$ ' and $s p^2$ carbons is ' $b$ '. Value of $(a+b)$ is

For the alkyne with formula $\mathrm{C}_6 \mathrm{H}_{10}$, the number of alkynes with acidic hydrogens is $x$ and number of alkynes with no acidic hydrogens is $y . x$ and $y$ are respectively

Ethylene on reaction with cold, dilute alkaline $\mathrm{KMnO}_4$ at 273 K gives a compound ' $P$ '. This on polymerisation with which of the following gives dacron?

An alkene $X$ on ozonolysis gives a mixture of simplest ketone $(Y)$ and 3-pentanone. The IUPAC name of the alkene $X$ is

Dehydration of an organic acid $X$ with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ at 373 K gives $\mathrm{H}_2 \mathrm{O}$ and gas $Y$. The hybridisation of the carbon in $Y$ and nature of $Y$ are respectively.

Which of the following is an example of electrophilic substitution reaction?

Consider the given sequence of reactions,
\(\mathrm{C}_2 \mathrm{H}_6+\frac{3}{2} \mathrm{O}_2 \xrightarrow[\Delta]{(\mathrm{CH}, \mathrm{COO})_2 \mathrm{Mn}} X \xrightarrow{\mathrm{Na}} Y\)
Electrolysis of aqueous solution of $Y$ gives g...

$X$ and $Z$ respectively in the following reaction sequence are $\mathrm{C}_3 \mathrm{H}_6 \xrightarrow{X} Y \xrightarrow[\mathrm{AlCl}_3]{\mathrm{C}_6 \mathrm{H}_6} Z$ (Major projuct)

An alkene $X\left(\mathrm{C}_4 \mathrm{H}_8\right)$ exhibits geometrical isomerism. Oxidation of $A$ with $\mathrm{KMnO}_4 / \mathrm{H}^{+}$gave $Y$. On heating sodium salt of $Y$ with a mixture of NaOH and CaO gave $Z$. What is $Z$ ?

What are $Y$ and $Z$ respectively in the given reaction sequence?

Consider the following reaction sequence
$ \text { 2-methylpropane } \xrightarrow{\mathrm{KMnO}_{4}} X \xrightarrow[358 \mathrm{~K}]{20 \% \mathrm{H}_3 \mathrm{PO}_4} Y \xrightarrow[\text { (ii) } \mathrm{Zn} / \mathrm{H}_{2} \mathrm{O}]{\t...

Compound ' $A$ ' on heating with sodalime gives propane. Identify the compound ' $A$ '.

What is ' $ Y $ ' in the following set of reactions? $$ \mathrm{C}_3 \mathrm{H}_4 \xrightarrow[\substack{\mathrm{Hg}^{2+} / \mathrm{H}^{+} \\ 333 \mathrm{~K}}]{\mathrm{H}_2 \mathrm{O}} X \xleftarrow[\substack{\text { (ii) } \mathrm{Zn}+\mat...

At high pressure and regulated supply of air, methane is heated with catalyst ' $X$ to give methanol and with catalyst ' $Y$ ' to give methanal. $X$ and $Y$ respectively are

The alkane which is next to methane in homologous series can be prepared from which of the following reactions?$ \text { I. } 2 \mathrm{CH}_{3} \mathrm{Br} \xrightarrow[\text { Dry ether }]{\mathrm{Na}} $II. $\mathrm{CH}_{3} \mathrm{COOH} \...

\(\text { In the conversion of } A \text { to } B \text {, the electrophile involved is }\)

The aromatic compound/species with maximum number of $\pi$-electrons is

An alkene $X$ on ozonolysis gives a mixture of propan-2-one and methanal. What is $X$ ?

Addition of HBr to propene in presence of a peroxide takes place contrary to Markownikoff rule. This can be explained by the mechanism involving

\(\mathrm{C}_3 \mathrm{H}_4+\mathrm{H}_2 \mathrm{O} \xrightarrow[333 \mathrm{~K}]{\mathrm{Hg}^{2+} / \mathrm{H}^{+}}[X] \stackrel{\text { Tautomerisation }}{\rightleftharpoons} Y\)
$X$ and $Y$ are respectively

The rate of attack of an electrophile is least when $X$ in the given compound is

Arrange the following in the correct order of their acidic strength.
I. $\mathrm{H}_2 \mathrm{C}=\mathrm{CH}_2$
II. $\mathrm{CH} \equiv \mathrm{CH}$
III. $\mathrm{CH}_3-\mathrm{C} \equiv \mathrm{CH}$
IV. $\mathrm{CH}_3-\mathrm{CH}_3$

Match the following.
The correct answer is

An alkene $(X)$ on ozonolysis gives propanal and ethanal. What is $X$ ?

An alkene $X$ with formula $\mathrm{C}_4 \mathrm{H}_8$ does not exhibit geometrical isomerism. In the conversion of $X$ to $Y$, the correct sequence of reagents $A$ and $B$ used are ( $Y$ gives iodoform test)

An alkene $X\left(\mathrm{C}_6 \mathrm{H}_{12}\right)$ on ozonolysis gave acetaldehyde and ethyl methyl ketone. What is the product formed when $X$ reacts with HBr ?

The functional groups in $X$ and $Y$ are respectively.

Identify the major product $B$ in the given sequence of reactions.

\(\text { Identify ' } Z \text { ' in the following reaction sequence }\)

The molecular formula of the product formed when benzene is reacted with excess of chlorine molecules under ultra-violet light is

The organic compound 5-allylcyclohex-3-ene-1-ol is reacted with cold, dilute, aqueous solution of $\mathrm{KMnO}_4$. The total number of hydroxyl group(s) $(-\mathrm{OH})$ present in the product is

The major product formed in the following reaction sequence is

The major products $P$ and $Q$ in the following reactions, respectively, are

The order of decreasing reactivity towards an electrophilic reagent, for the following compounds, is
(i) benzene
(iii) chlorobenzene
(ii) toluene
(iv) phenol

The major product of the following reaction is
\(\text { Glucose } \frac{\text { (i) } \mathrm{HI}, \Delta}{\text { (ii) } \mathrm{Mo}_2 \mathrm{O}_3, 773 \mathrm{~K}, 10 \cdot 20 \mathrm{am}}\)

The correct order of rate of addition of $\mathrm{Br}_2$ /water to the following alkenes is

The most suitable solvent for Wurtz reaction is

Maximum number of bromine atoms present in the final product $P$ upon complete bromination are

The reaction of one mole of 3-ethyl-3-methylpenta-1, 4-diene with $\mathrm{O}_3$ and then with $\mathrm{Zn} / \mathrm{H}_2 \mathrm{O}$, gives

When $\mathrm{CH}_3 \mathrm{Br}$ and $\mathrm{C}_2 \mathrm{H}_5 \mathrm{Br}$ are subjected to Wurtz reaction, the maximum number of possible alkane product(s) formed is/are

The correct order of reactivity of hydrogen halides with propene is

Which of the following sets of functional groups is meta-directing group?