285514
A haloalkane undergoes\(\mathrm{S}_{\mathrm{N}} 2\) or \(\mathrm{S}_{\mathrm{N}} 1\) reaction depending on :
1 Solvent used in the reaction
2 Low temperature
3 The type of halogen atom
4 Stability of the haloalkane
Explanation:
(a) The nature of the alkyl group,\(R\), of the substrate exert a profound effect on which meachanism is to be followed. At the same time, ability to accommodate a positive charge increases; heterolysis become easier and hence faster. So stability of carbocation decide wheater the reaction is \(\mathrm{S}_{\mathrm{N}} 1\) or \(\mathrm{S}_{\mathrm{N}}\).
On the other hand Polar protic solvent favors \(\mathrm{S}_{\mathrm{N}} 1\) and polar aprotic solvent favors \(\mathrm{S}_{\mathrm{N}} 2\) meachanism.
Karnataka CET 2024
CHEMISTRY(KCET)
285515
2-Methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
1 chloromethane and 2-chloropropane
2 chloroethane and chloromethane
3 chloroethane and 1-chloropropane
4 chloromethane and 1-chloropropane
Explanation:
(a)
2 - methyl propane
Karnataka CET 2024
CHEMISTRY(KCET)
285516
In the given sequence of reactions, identify ' P ', ' Q ', '\(R\) ' and ' S ' respectively.
3 HBr , Alc.\(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
4 \(\mathrm{Br}_2\), Alc. \(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
Explanation:
(d)
Karnataka CET 2024
CHEMISTRY(KCET)
285517
The first chlorinated organic insecticide prepared is:
1 Gammexane
2 Chloroform
3 \(\mathrm{COCl}_2\)
4 DDT
Explanation:
DDT, the first chlorinated organic insecticides
(DDT)
Karnataka CET 2024
CHEMISTRY(KCET)
285518
A pair of compounds having the same boiling points are
1 cis but-2-ene and trans but-2-ene
2 n-hexane and-neo-hexane
3 benzene and naphthalene
4 (+) butan\(-2-\) ol and ( - ) butan -2 -ol
Explanation:
(d) (+) Butan-2-ol and (-) butan-2-ol are optical isomers having the same type and magnitude of intermolecular forces because of which their boiling points are the same.
285514
A haloalkane undergoes\(\mathrm{S}_{\mathrm{N}} 2\) or \(\mathrm{S}_{\mathrm{N}} 1\) reaction depending on :
1 Solvent used in the reaction
2 Low temperature
3 The type of halogen atom
4 Stability of the haloalkane
Explanation:
(a) The nature of the alkyl group,\(R\), of the substrate exert a profound effect on which meachanism is to be followed. At the same time, ability to accommodate a positive charge increases; heterolysis become easier and hence faster. So stability of carbocation decide wheater the reaction is \(\mathrm{S}_{\mathrm{N}} 1\) or \(\mathrm{S}_{\mathrm{N}}\).
On the other hand Polar protic solvent favors \(\mathrm{S}_{\mathrm{N}} 1\) and polar aprotic solvent favors \(\mathrm{S}_{\mathrm{N}} 2\) meachanism.
Karnataka CET 2024
CHEMISTRY(KCET)
285515
2-Methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
1 chloromethane and 2-chloropropane
2 chloroethane and chloromethane
3 chloroethane and 1-chloropropane
4 chloromethane and 1-chloropropane
Explanation:
(a)
2 - methyl propane
Karnataka CET 2024
CHEMISTRY(KCET)
285516
In the given sequence of reactions, identify ' P ', ' Q ', '\(R\) ' and ' S ' respectively.
3 HBr , Alc.\(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
4 \(\mathrm{Br}_2\), Alc. \(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
Explanation:
(d)
Karnataka CET 2024
CHEMISTRY(KCET)
285517
The first chlorinated organic insecticide prepared is:
1 Gammexane
2 Chloroform
3 \(\mathrm{COCl}_2\)
4 DDT
Explanation:
DDT, the first chlorinated organic insecticides
(DDT)
Karnataka CET 2024
CHEMISTRY(KCET)
285518
A pair of compounds having the same boiling points are
1 cis but-2-ene and trans but-2-ene
2 n-hexane and-neo-hexane
3 benzene and naphthalene
4 (+) butan\(-2-\) ol and ( - ) butan -2 -ol
Explanation:
(d) (+) Butan-2-ol and (-) butan-2-ol are optical isomers having the same type and magnitude of intermolecular forces because of which their boiling points are the same.
285514
A haloalkane undergoes\(\mathrm{S}_{\mathrm{N}} 2\) or \(\mathrm{S}_{\mathrm{N}} 1\) reaction depending on :
1 Solvent used in the reaction
2 Low temperature
3 The type of halogen atom
4 Stability of the haloalkane
Explanation:
(a) The nature of the alkyl group,\(R\), of the substrate exert a profound effect on which meachanism is to be followed. At the same time, ability to accommodate a positive charge increases; heterolysis become easier and hence faster. So stability of carbocation decide wheater the reaction is \(\mathrm{S}_{\mathrm{N}} 1\) or \(\mathrm{S}_{\mathrm{N}}\).
On the other hand Polar protic solvent favors \(\mathrm{S}_{\mathrm{N}} 1\) and polar aprotic solvent favors \(\mathrm{S}_{\mathrm{N}} 2\) meachanism.
Karnataka CET 2024
CHEMISTRY(KCET)
285515
2-Methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
1 chloromethane and 2-chloropropane
2 chloroethane and chloromethane
3 chloroethane and 1-chloropropane
4 chloromethane and 1-chloropropane
Explanation:
(a)
2 - methyl propane
Karnataka CET 2024
CHEMISTRY(KCET)
285516
In the given sequence of reactions, identify ' P ', ' Q ', '\(R\) ' and ' S ' respectively.
3 HBr , Alc.\(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
4 \(\mathrm{Br}_2\), Alc. \(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
Explanation:
(d)
Karnataka CET 2024
CHEMISTRY(KCET)
285517
The first chlorinated organic insecticide prepared is:
1 Gammexane
2 Chloroform
3 \(\mathrm{COCl}_2\)
4 DDT
Explanation:
DDT, the first chlorinated organic insecticides
(DDT)
Karnataka CET 2024
CHEMISTRY(KCET)
285518
A pair of compounds having the same boiling points are
1 cis but-2-ene and trans but-2-ene
2 n-hexane and-neo-hexane
3 benzene and naphthalene
4 (+) butan\(-2-\) ol and ( - ) butan -2 -ol
Explanation:
(d) (+) Butan-2-ol and (-) butan-2-ol are optical isomers having the same type and magnitude of intermolecular forces because of which their boiling points are the same.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHEMISTRY(KCET)
285514
A haloalkane undergoes\(\mathrm{S}_{\mathrm{N}} 2\) or \(\mathrm{S}_{\mathrm{N}} 1\) reaction depending on :
1 Solvent used in the reaction
2 Low temperature
3 The type of halogen atom
4 Stability of the haloalkane
Explanation:
(a) The nature of the alkyl group,\(R\), of the substrate exert a profound effect on which meachanism is to be followed. At the same time, ability to accommodate a positive charge increases; heterolysis become easier and hence faster. So stability of carbocation decide wheater the reaction is \(\mathrm{S}_{\mathrm{N}} 1\) or \(\mathrm{S}_{\mathrm{N}}\).
On the other hand Polar protic solvent favors \(\mathrm{S}_{\mathrm{N}} 1\) and polar aprotic solvent favors \(\mathrm{S}_{\mathrm{N}} 2\) meachanism.
Karnataka CET 2024
CHEMISTRY(KCET)
285515
2-Methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
1 chloromethane and 2-chloropropane
2 chloroethane and chloromethane
3 chloroethane and 1-chloropropane
4 chloromethane and 1-chloropropane
Explanation:
(a)
2 - methyl propane
Karnataka CET 2024
CHEMISTRY(KCET)
285516
In the given sequence of reactions, identify ' P ', ' Q ', '\(R\) ' and ' S ' respectively.
3 HBr , Alc.\(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
4 \(\mathrm{Br}_2\), Alc. \(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
Explanation:
(d)
Karnataka CET 2024
CHEMISTRY(KCET)
285517
The first chlorinated organic insecticide prepared is:
1 Gammexane
2 Chloroform
3 \(\mathrm{COCl}_2\)
4 DDT
Explanation:
DDT, the first chlorinated organic insecticides
(DDT)
Karnataka CET 2024
CHEMISTRY(KCET)
285518
A pair of compounds having the same boiling points are
1 cis but-2-ene and trans but-2-ene
2 n-hexane and-neo-hexane
3 benzene and naphthalene
4 (+) butan\(-2-\) ol and ( - ) butan -2 -ol
Explanation:
(d) (+) Butan-2-ol and (-) butan-2-ol are optical isomers having the same type and magnitude of intermolecular forces because of which their boiling points are the same.
285514
A haloalkane undergoes\(\mathrm{S}_{\mathrm{N}} 2\) or \(\mathrm{S}_{\mathrm{N}} 1\) reaction depending on :
1 Solvent used in the reaction
2 Low temperature
3 The type of halogen atom
4 Stability of the haloalkane
Explanation:
(a) The nature of the alkyl group,\(R\), of the substrate exert a profound effect on which meachanism is to be followed. At the same time, ability to accommodate a positive charge increases; heterolysis become easier and hence faster. So stability of carbocation decide wheater the reaction is \(\mathrm{S}_{\mathrm{N}} 1\) or \(\mathrm{S}_{\mathrm{N}}\).
On the other hand Polar protic solvent favors \(\mathrm{S}_{\mathrm{N}} 1\) and polar aprotic solvent favors \(\mathrm{S}_{\mathrm{N}} 2\) meachanism.
Karnataka CET 2024
CHEMISTRY(KCET)
285515
2-Methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
1 chloromethane and 2-chloropropane
2 chloroethane and chloromethane
3 chloroethane and 1-chloropropane
4 chloromethane and 1-chloropropane
Explanation:
(a)
2 - methyl propane
Karnataka CET 2024
CHEMISTRY(KCET)
285516
In the given sequence of reactions, identify ' P ', ' Q ', '\(R\) ' and ' S ' respectively.
3 HBr , Alc.\(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
4 \(\mathrm{Br}_2\), Alc. \(\mathrm{KOH}, \mathrm{NaNH}_2\), Red hot iron tube
Explanation:
(d)
Karnataka CET 2024
CHEMISTRY(KCET)
285517
The first chlorinated organic insecticide prepared is:
1 Gammexane
2 Chloroform
3 \(\mathrm{COCl}_2\)
4 DDT
Explanation:
DDT, the first chlorinated organic insecticides
(DDT)
Karnataka CET 2024
CHEMISTRY(KCET)
285518
A pair of compounds having the same boiling points are
1 cis but-2-ene and trans but-2-ene
2 n-hexane and-neo-hexane
3 benzene and naphthalene
4 (+) butan\(-2-\) ol and ( - ) butan -2 -ol
Explanation:
(d) (+) Butan-2-ol and (-) butan-2-ol are optical isomers having the same type and magnitude of intermolecular forces because of which their boiling points are the same.