141.
Of the three isomeric $${C_3}{H_4}$$ hydrocarbons shown below how many can exist with all carbon and hydrogen nuclei located in a single plane
A
0
B
1
C
2
D
3
Answer :
0
142. Which one of the following class of compounds is obtained by polymerization of acetylene ?
A
Poly-yne
B
Poly-ene
C
Poly-ester
D
Poly-amine
Answer :
Poly-ene
143. Acid catalyzed hydration of alkenes except ethene leads to the formation of
A
mixture of secondary and tertiary alcohols
B
mixture of primary and secondary alcohols
C
secondary or tertiary alcohol
D
primary alcohol
Answer :
mixture of secondary and tertiary alcohols
144. Which alkane is produced when sodium salt of butanoic acid is heated with soda lime?
A
$$C{H_3}C{H_3}$$
B
$$C{H_3}C{H_2}C{H_2}C{H_3}$$
C
$$C{H_4}$$
D
$$C{H_3}C{H_2}C{H_3}$$
Answer :
$$C{H_3}C{H_2}C{H_3}$$
145. Which one of the following compounds gives acetone $${\left( {C{H_3}} \right)_2}C = O$$ as one of the product of its ozonolysis ?
A
B
C
D
Answer :
146. Few reactions of alkanes are given. Identify the name of the reaction which is not correctly matched with the reaction.
A
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\xrightarrow{AlC{{l}_{3}}+HCl}\] \[C{{H}_{3}}\overset{\begin{smallmatrix}
C{{H}_{3}} \\
|\,\,\,\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,C{{H}_{3}}\,\,\text{- Isomerisation }\]
B
\[{{C}_{6}}{{H}_{14}}\xrightarrow{773\,K}{{C}_{4}}{{H}_{8}}+{{C}_{2}}{{H}_{6}}\] \[\text{- Pyrolysis}\]
C
\[C{{H}_{4}}+2{{O}_{2}}\xrightarrow{\Delta }C{{O}_{2}}+2{{H}_{2}}O\] \[\text{- Controlled oxidation}\]
D
\[C{{H}_{4}}+HN{{O}_{3}}\xrightarrow{{{400}^{\circ }}C}C{{H}_{3}}N{{O}_{2}}\] \[\text{- Nitration}\]
Answer :
\[C{{H}_{4}}+2{{O}_{2}}\xrightarrow{\Delta }C{{O}_{2}}+2{{H}_{2}}O\] \[\text{- Controlled oxidation}\]
147. Kerosene is a mixture of
A
aromatic hydrocarbons
B
aliphatic hydrocarbons
C
unsaturated hydrocarbons
D
saturated hydrocarbons
Answer :
aliphatic hydrocarbons
148. Coal tar is the main source of
A
aromatic compounds
B
alicyclic compounds
C
aliphatic compounds
D
nitro compounds
Answer :
aromatic compounds
149. Hydrolysis of ozonide of but-1-ene gives
A
ethylene only
B
acetaldehyde and formaldehyde
C
propionaldehyde and formaldehyde
D
acetaldehyde only
Answer :
propionaldehyde and formaldehyde
150.
The compound, 
on reaction with $$NaI{O_4}$$ in the presence of $$KMn{O_4}$$ gives
A
$$C{H_3}COC{H_3} + C{H_3}CHO$$
B
$$C{H_3}CHO + C{O_2}$$
C
$$C{H_3}COC{H_3}$$
D
$$C{H_3}COC{H_3} + C{H_3}COOH$$
Answer :
$$C{H_3}COC{H_3} + C{H_3}COOH$$
