230323
Identify the primary halide among the following compounds.
1 1-bromo-but-2-ene
2 4-bromo-pent-2-ene
3 2-bromo-2-methyl propane
4 t-butyl bromide
Explanation:
: 1 - bromo- but - 2 - ene
AP EAMCET (Engg.) 18.9.2020 Shift-I
Hydrocarbons
230331
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \stackrel{\mathrm{A}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}$ $\stackrel{\mathrm{B}}{\longrightarrow} \mathrm{CH}_2=\mathrm{CH}_2$ $A$ and $B$ in this sequence of reaction are
1 $\mathrm{KOH}_{(\mathrm{aq})}$ and $\mathrm{PCl}_5$
2 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{\text {(aq.) }}$
3 $\mathrm{Cl}_2$ and $\mathrm{KOH}_{\text {(alc.) }}$
4 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{(\mathrm{akc} \text {.) }}$
Explanation:
: Ethanol reacts with phosphorus tetrachloride to give the ethylchloride. Now, ethyl chloride reacts with alcoholic $\mathrm{KOH}$ to form the alkene followed by elimination reaction.
COMEDK 2012
Hydrocarbons
230335
The compound which on ozonolysis produces a mixture of propanone and ethanal is
1 2-methylbut-1-ene
2 2-pentene
3 2-pentyne
4 2-methylbut-2-ene.
Explanation:
:
COMEDK 2014
Hydrocarbons
230336
Which of the following is the most stable alkene?
1 $\mathrm{RCH}=\mathrm{CH}_2$
2 $\mathrm{CH}_2=\mathrm{CH}_2$
3 $\mathrm{RCH}=\mathrm{CHR}$
4 $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$
Explanation:
: Greater the number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene (Satyzeff's rule). Hence the $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$ more stable alkene
COMEDK 2018
Hydrocarbons
230337
When chlorine is passed through boiling toluene we get
230323
Identify the primary halide among the following compounds.
1 1-bromo-but-2-ene
2 4-bromo-pent-2-ene
3 2-bromo-2-methyl propane
4 t-butyl bromide
Explanation:
: 1 - bromo- but - 2 - ene
AP EAMCET (Engg.) 18.9.2020 Shift-I
Hydrocarbons
230331
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \stackrel{\mathrm{A}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}$ $\stackrel{\mathrm{B}}{\longrightarrow} \mathrm{CH}_2=\mathrm{CH}_2$ $A$ and $B$ in this sequence of reaction are
1 $\mathrm{KOH}_{(\mathrm{aq})}$ and $\mathrm{PCl}_5$
2 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{\text {(aq.) }}$
3 $\mathrm{Cl}_2$ and $\mathrm{KOH}_{\text {(alc.) }}$
4 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{(\mathrm{akc} \text {.) }}$
Explanation:
: Ethanol reacts with phosphorus tetrachloride to give the ethylchloride. Now, ethyl chloride reacts with alcoholic $\mathrm{KOH}$ to form the alkene followed by elimination reaction.
COMEDK 2012
Hydrocarbons
230335
The compound which on ozonolysis produces a mixture of propanone and ethanal is
1 2-methylbut-1-ene
2 2-pentene
3 2-pentyne
4 2-methylbut-2-ene.
Explanation:
:
COMEDK 2014
Hydrocarbons
230336
Which of the following is the most stable alkene?
1 $\mathrm{RCH}=\mathrm{CH}_2$
2 $\mathrm{CH}_2=\mathrm{CH}_2$
3 $\mathrm{RCH}=\mathrm{CHR}$
4 $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$
Explanation:
: Greater the number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene (Satyzeff's rule). Hence the $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$ more stable alkene
COMEDK 2018
Hydrocarbons
230337
When chlorine is passed through boiling toluene we get
NEET Test Series from KOTA - 10 Papers In MS WORD
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Hydrocarbons
230323
Identify the primary halide among the following compounds.
1 1-bromo-but-2-ene
2 4-bromo-pent-2-ene
3 2-bromo-2-methyl propane
4 t-butyl bromide
Explanation:
: 1 - bromo- but - 2 - ene
AP EAMCET (Engg.) 18.9.2020 Shift-I
Hydrocarbons
230331
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \stackrel{\mathrm{A}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}$ $\stackrel{\mathrm{B}}{\longrightarrow} \mathrm{CH}_2=\mathrm{CH}_2$ $A$ and $B$ in this sequence of reaction are
1 $\mathrm{KOH}_{(\mathrm{aq})}$ and $\mathrm{PCl}_5$
2 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{\text {(aq.) }}$
3 $\mathrm{Cl}_2$ and $\mathrm{KOH}_{\text {(alc.) }}$
4 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{(\mathrm{akc} \text {.) }}$
Explanation:
: Ethanol reacts with phosphorus tetrachloride to give the ethylchloride. Now, ethyl chloride reacts with alcoholic $\mathrm{KOH}$ to form the alkene followed by elimination reaction.
COMEDK 2012
Hydrocarbons
230335
The compound which on ozonolysis produces a mixture of propanone and ethanal is
1 2-methylbut-1-ene
2 2-pentene
3 2-pentyne
4 2-methylbut-2-ene.
Explanation:
:
COMEDK 2014
Hydrocarbons
230336
Which of the following is the most stable alkene?
1 $\mathrm{RCH}=\mathrm{CH}_2$
2 $\mathrm{CH}_2=\mathrm{CH}_2$
3 $\mathrm{RCH}=\mathrm{CHR}$
4 $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$
Explanation:
: Greater the number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene (Satyzeff's rule). Hence the $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$ more stable alkene
COMEDK 2018
Hydrocarbons
230337
When chlorine is passed through boiling toluene we get
230323
Identify the primary halide among the following compounds.
1 1-bromo-but-2-ene
2 4-bromo-pent-2-ene
3 2-bromo-2-methyl propane
4 t-butyl bromide
Explanation:
: 1 - bromo- but - 2 - ene
AP EAMCET (Engg.) 18.9.2020 Shift-I
Hydrocarbons
230331
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \stackrel{\mathrm{A}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}$ $\stackrel{\mathrm{B}}{\longrightarrow} \mathrm{CH}_2=\mathrm{CH}_2$ $A$ and $B$ in this sequence of reaction are
1 $\mathrm{KOH}_{(\mathrm{aq})}$ and $\mathrm{PCl}_5$
2 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{\text {(aq.) }}$
3 $\mathrm{Cl}_2$ and $\mathrm{KOH}_{\text {(alc.) }}$
4 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{(\mathrm{akc} \text {.) }}$
Explanation:
: Ethanol reacts with phosphorus tetrachloride to give the ethylchloride. Now, ethyl chloride reacts with alcoholic $\mathrm{KOH}$ to form the alkene followed by elimination reaction.
COMEDK 2012
Hydrocarbons
230335
The compound which on ozonolysis produces a mixture of propanone and ethanal is
1 2-methylbut-1-ene
2 2-pentene
3 2-pentyne
4 2-methylbut-2-ene.
Explanation:
:
COMEDK 2014
Hydrocarbons
230336
Which of the following is the most stable alkene?
1 $\mathrm{RCH}=\mathrm{CH}_2$
2 $\mathrm{CH}_2=\mathrm{CH}_2$
3 $\mathrm{RCH}=\mathrm{CHR}$
4 $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$
Explanation:
: Greater the number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene (Satyzeff's rule). Hence the $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$ more stable alkene
COMEDK 2018
Hydrocarbons
230337
When chlorine is passed through boiling toluene we get
230323
Identify the primary halide among the following compounds.
1 1-bromo-but-2-ene
2 4-bromo-pent-2-ene
3 2-bromo-2-methyl propane
4 t-butyl bromide
Explanation:
: 1 - bromo- but - 2 - ene
AP EAMCET (Engg.) 18.9.2020 Shift-I
Hydrocarbons
230331
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \stackrel{\mathrm{A}}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}$ $\stackrel{\mathrm{B}}{\longrightarrow} \mathrm{CH}_2=\mathrm{CH}_2$ $A$ and $B$ in this sequence of reaction are
1 $\mathrm{KOH}_{(\mathrm{aq})}$ and $\mathrm{PCl}_5$
2 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{\text {(aq.) }}$
3 $\mathrm{Cl}_2$ and $\mathrm{KOH}_{\text {(alc.) }}$
4 $\mathrm{PCl}_5$ and $\mathrm{KOH}_{(\mathrm{akc} \text {.) }}$
Explanation:
: Ethanol reacts with phosphorus tetrachloride to give the ethylchloride. Now, ethyl chloride reacts with alcoholic $\mathrm{KOH}$ to form the alkene followed by elimination reaction.
COMEDK 2012
Hydrocarbons
230335
The compound which on ozonolysis produces a mixture of propanone and ethanal is
1 2-methylbut-1-ene
2 2-pentene
3 2-pentyne
4 2-methylbut-2-ene.
Explanation:
:
COMEDK 2014
Hydrocarbons
230336
Which of the following is the most stable alkene?
1 $\mathrm{RCH}=\mathrm{CH}_2$
2 $\mathrm{CH}_2=\mathrm{CH}_2$
3 $\mathrm{RCH}=\mathrm{CHR}$
4 $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$
Explanation:
: Greater the number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene (Satyzeff's rule). Hence the $\mathrm{R}_2 \mathrm{C}=\mathrm{CR}_2$ more stable alkene
COMEDK 2018
Hydrocarbons
230337
When chlorine is passed through boiling toluene we get
