Hydrocarbons practice · Mixed difficulty

Poisonous gases are:

S-I: Disubstituted acetylene on partial hydrogenation may give trans isomer
S-II: Lindlar's catalyst is used for Partial hydrogenation.

$C{H_3}C \equiv CC{H_2}C{H_3}\xrightarrow[{ii)\,\mathrm{hydrolysis}}]{{i){O_3}}}\text{Products}$
Then products are:

Which one is not prepared by Wurtz reaction

A lead compound known as….is used as anti-knock in petroleum industry to increase the efficiency of fuel consumption

Identify the product (P) in the reaction:

${R_3}\mathrm{C}-\mathrm{H}\xrightarrow{{\mathrm{Alk}\mathrm{.KMn}{\mathrm{O}_4}}}\mathrm{P}$

The presence of $N{O_2}$ group in benzene ring

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?

The monosodium salt of acetylene on treating with dry $\mathrm{C}{\mathrm{O}_2}$ forms:

Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of:

Assertion (A): Acetylene reacts with sodamide to evolve $\mathrm{H}_2$ gas.
Reason (R): Acetylene is a weaker acid than ammonia

$C{H_3} - CH = CH - C{H_3}\xrightarrow[{ii){H_2}O + Zn}]{{i){O_3}}}\mathrm{product}\,\,\mathrm{is}$

In the following reaction, A and B, respectively are
$A\xrightarrow{{HBr}}{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{Br}\xleftarrow{B}A$

Halogenation of alkanes is an example of:

Consider the following statements
I) Hyperconjugation helps in increasing electron density at ortho an para sites in case of alkyl groups

II) Electron donating groups are activators and are ortho and para directors because they stabilize the arenium cations.
III) Electron withdrawing groups are activators and are meta directors because they stabilized the arenium cations.
IV) Halogens are activators and ortho and para directors.
Select correct statements.

Addition of $\mathrm{B}{\mathrm{r}_2}$ on $trans$- butene-2 gives :

Acetylene on reacting with hypochlorous acid gives:

The decreasing order of reactivity of hydrogen bromide on the following alkenes is
$\mathop {{\text{C}}{{\text{H}}_2} = {\text{C}}{{\text{H}}_2}}\limits_{\text{I}} ,\mathop {{\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{CH}} = {\text{C}}{{\text{H}}_2}}\limits_{{\text{II}}} ,\mathop {{\text{C}}{{\text{H}}_2} = {\text{CHCl}}}\limits_{{\text{III}}} {\text{,}}\mathop {{{\left( {{\text{C}}{{\text{H}}_3}} \right)}_2}{\text{C}} = {\text{C}}{{\text{H}}_2}}\limits_{{\text{IV}}}$

One mole of alkene on ozonalysis give one mole of acetaldehyde and one mole of acetone. The IUPAC name of alkene is

Natural gas is a mixture of:

The hydrocarbon which decolourizes alkaline $\mathrm{KMn}{\mathrm{O}_4}$ solution, but does not give any precipitate with ammoniacal silver nitrate is:

Hex – 2 – yne changes to hex – 1 – yne by using

C is – trans isomerism is not possible in alkynes due to

Assertion (A): Propyne is less acidic than ethyne

Reason (R): Stability of ${CH}_3-{C} \equiv \overline{{C}} < {CH} \equiv \overline{{C}}$

Which among the following is Lindlar’s catalyst

Propyne does not react with

The number of theoretically possible conformations of an alkane is

Which fraction of coal-tar is rich in arene?

By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives

For an electrophilic substitution reaction, the presence of a halogen atom in the benzene ring