230183
Which of the following reaction is used for producing symmetrical alkane with double carbon atom?
1 Sandmeyer's reaction
2 wurtz reaction
3 Gattermann reaction
4 Riemer- Tiemann reaction
Explanation:
: Wurtz reaction is a coupling reaction which are used in organic chemistry and organ metallic chemistry. Wurtz reaction is used to prepare symmetrical alkene. In wurtz reaction alkyl halide react with metallic sodium in presence of dry ether to form symmetrical alkanes containing double number of carbon atoms present in the alkyl halide. $2 \mathrm{R}-\mathrm{X}+2 \mathrm{Na} \stackrel{\text { diyether }}{\longrightarrow} \mathrm{R}-\mathrm{R}+2 \mathrm{NaX}$
J and K CET-(2019)
Hydrocarbons
230184
1-chlorobutane on reaction with alcoholic potash gives
1 1-butanol
2 2-butene
3 1-butene
4 2-butanol
Explanation:
: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Cl} \stackrel{\text { al. } \mathrm{KOH}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{HCl}$ When 1- chloro butane on reaction with alcoholic potash gives 1 - butane. Alcoholics potash $(\mathrm{KOH})$ is a dehydrohalogenation agent, it react with an alkyl halide and alkene forms as a product.
: Aluminium carbide by reaction with water produces a methane and aluminium hydroxide.
J and K CET-(2003)
Hydrocarbons
230196
A fuel containing $25 \% \mathrm{n}$-heptane and $75 \%$ isooctane has got octane number
1 25
2 50
3 75
4 100
Explanation:
: Octane is one of the most important product qualities for gasoline. Octane is a measure of the tendency of gasoline to resist auto-igniting when compressed with air in a spark ignition engine. High octane naturals are more valuable to a refiner because they allow the refiner to make higher octane gasoline. Octant is measured using an index reflecting the degree to which a fuel will knock under specific operating conditions A mixture of $75 \%$ isooctane mixed with $25 \%$ n-heptanes would have an octane rating of 75 .
230183
Which of the following reaction is used for producing symmetrical alkane with double carbon atom?
1 Sandmeyer's reaction
2 wurtz reaction
3 Gattermann reaction
4 Riemer- Tiemann reaction
Explanation:
: Wurtz reaction is a coupling reaction which are used in organic chemistry and organ metallic chemistry. Wurtz reaction is used to prepare symmetrical alkene. In wurtz reaction alkyl halide react with metallic sodium in presence of dry ether to form symmetrical alkanes containing double number of carbon atoms present in the alkyl halide. $2 \mathrm{R}-\mathrm{X}+2 \mathrm{Na} \stackrel{\text { diyether }}{\longrightarrow} \mathrm{R}-\mathrm{R}+2 \mathrm{NaX}$
J and K CET-(2019)
Hydrocarbons
230184
1-chlorobutane on reaction with alcoholic potash gives
1 1-butanol
2 2-butene
3 1-butene
4 2-butanol
Explanation:
: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Cl} \stackrel{\text { al. } \mathrm{KOH}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{HCl}$ When 1- chloro butane on reaction with alcoholic potash gives 1 - butane. Alcoholics potash $(\mathrm{KOH})$ is a dehydrohalogenation agent, it react with an alkyl halide and alkene forms as a product.
: Aluminium carbide by reaction with water produces a methane and aluminium hydroxide.
J and K CET-(2003)
Hydrocarbons
230196
A fuel containing $25 \% \mathrm{n}$-heptane and $75 \%$ isooctane has got octane number
1 25
2 50
3 75
4 100
Explanation:
: Octane is one of the most important product qualities for gasoline. Octane is a measure of the tendency of gasoline to resist auto-igniting when compressed with air in a spark ignition engine. High octane naturals are more valuable to a refiner because they allow the refiner to make higher octane gasoline. Octant is measured using an index reflecting the degree to which a fuel will knock under specific operating conditions A mixture of $75 \%$ isooctane mixed with $25 \%$ n-heptanes would have an octane rating of 75 .
230183
Which of the following reaction is used for producing symmetrical alkane with double carbon atom?
1 Sandmeyer's reaction
2 wurtz reaction
3 Gattermann reaction
4 Riemer- Tiemann reaction
Explanation:
: Wurtz reaction is a coupling reaction which are used in organic chemistry and organ metallic chemistry. Wurtz reaction is used to prepare symmetrical alkene. In wurtz reaction alkyl halide react with metallic sodium in presence of dry ether to form symmetrical alkanes containing double number of carbon atoms present in the alkyl halide. $2 \mathrm{R}-\mathrm{X}+2 \mathrm{Na} \stackrel{\text { diyether }}{\longrightarrow} \mathrm{R}-\mathrm{R}+2 \mathrm{NaX}$
J and K CET-(2019)
Hydrocarbons
230184
1-chlorobutane on reaction with alcoholic potash gives
1 1-butanol
2 2-butene
3 1-butene
4 2-butanol
Explanation:
: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Cl} \stackrel{\text { al. } \mathrm{KOH}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{HCl}$ When 1- chloro butane on reaction with alcoholic potash gives 1 - butane. Alcoholics potash $(\mathrm{KOH})$ is a dehydrohalogenation agent, it react with an alkyl halide and alkene forms as a product.
: Aluminium carbide by reaction with water produces a methane and aluminium hydroxide.
J and K CET-(2003)
Hydrocarbons
230196
A fuel containing $25 \% \mathrm{n}$-heptane and $75 \%$ isooctane has got octane number
1 25
2 50
3 75
4 100
Explanation:
: Octane is one of the most important product qualities for gasoline. Octane is a measure of the tendency of gasoline to resist auto-igniting when compressed with air in a spark ignition engine. High octane naturals are more valuable to a refiner because they allow the refiner to make higher octane gasoline. Octant is measured using an index reflecting the degree to which a fuel will knock under specific operating conditions A mixture of $75 \%$ isooctane mixed with $25 \%$ n-heptanes would have an octane rating of 75 .
230183
Which of the following reaction is used for producing symmetrical alkane with double carbon atom?
1 Sandmeyer's reaction
2 wurtz reaction
3 Gattermann reaction
4 Riemer- Tiemann reaction
Explanation:
: Wurtz reaction is a coupling reaction which are used in organic chemistry and organ metallic chemistry. Wurtz reaction is used to prepare symmetrical alkene. In wurtz reaction alkyl halide react with metallic sodium in presence of dry ether to form symmetrical alkanes containing double number of carbon atoms present in the alkyl halide. $2 \mathrm{R}-\mathrm{X}+2 \mathrm{Na} \stackrel{\text { diyether }}{\longrightarrow} \mathrm{R}-\mathrm{R}+2 \mathrm{NaX}$
J and K CET-(2019)
Hydrocarbons
230184
1-chlorobutane on reaction with alcoholic potash gives
1 1-butanol
2 2-butene
3 1-butene
4 2-butanol
Explanation:
: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Cl} \stackrel{\text { al. } \mathrm{KOH}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{HCl}$ When 1- chloro butane on reaction with alcoholic potash gives 1 - butane. Alcoholics potash $(\mathrm{KOH})$ is a dehydrohalogenation agent, it react with an alkyl halide and alkene forms as a product.
: Aluminium carbide by reaction with water produces a methane and aluminium hydroxide.
J and K CET-(2003)
Hydrocarbons
230196
A fuel containing $25 \% \mathrm{n}$-heptane and $75 \%$ isooctane has got octane number
1 25
2 50
3 75
4 100
Explanation:
: Octane is one of the most important product qualities for gasoline. Octane is a measure of the tendency of gasoline to resist auto-igniting when compressed with air in a spark ignition engine. High octane naturals are more valuable to a refiner because they allow the refiner to make higher octane gasoline. Octant is measured using an index reflecting the degree to which a fuel will knock under specific operating conditions A mixture of $75 \%$ isooctane mixed with $25 \%$ n-heptanes would have an octane rating of 75 .
