NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
232093
Which among the following conformations is the most stable for cyclohexame?
1 Boat conformation
2 Chair conformation
3 Skew conformation
4 Gauche conformation
Explanation:
The most stable conformations for cyclohexane is chair form because it has low rotational energy so, it has more stability. In chair form C-C-C bond are very close to $109^{\circ} .28^{\prime}$ so it almost free of angle stain. It is also fully staggered conformation so free torsional stain. Chair form of cyclohexane
J and K CET-(2019)
GENERAL ORGANIC CHEMISTRY
232111
Different structures generated due to reaction about $\mathrm{C}$ - $\mathrm{C}$ axis of an organic molecule, are examples for
1 Geometrical isomerism
2 Conformational isomerism
3 Optical isomerism
4 Structural isomerism
Explanation:
Different structure generated due to rotation about $\mathrm{C}-\mathrm{C}$ axis of organic molecule is conformational isomerism. In this conformation one bond is fixed and rotation around $\mathrm{C}-\mathrm{C}$ double bond and energy barrier is low.
J and K CET-(2007)
GENERAL ORGANIC CHEMISTRY
232112
n-pentane and 2-methylbutane are a pair of
1 Enantiomers
2 Stereoisomers
3 Diastereomers
4 Constitutional isomers
Explanation:
(D) : These pairs are comes in constitutional isomer. Constitutional isomer is also called structural isomer or chain isomer.
J and K CET-(2006)
GENERAL ORGANIC CHEMISTRY
232100
2-Pentanone and 3-methyl-2-butanone are a pair of...........isomers.
1 functional
2 chain
3 positional
4 stereo
Explanation:
Structure of 2-pentanone \& 3 methyl 2butanone it has difference in parent chain 5-carbon chain $\quad 4$ carbon chain So, it comes under chain isomer.
232093
Which among the following conformations is the most stable for cyclohexame?
1 Boat conformation
2 Chair conformation
3 Skew conformation
4 Gauche conformation
Explanation:
The most stable conformations for cyclohexane is chair form because it has low rotational energy so, it has more stability. In chair form C-C-C bond are very close to $109^{\circ} .28^{\prime}$ so it almost free of angle stain. It is also fully staggered conformation so free torsional stain. Chair form of cyclohexane
J and K CET-(2019)
GENERAL ORGANIC CHEMISTRY
232111
Different structures generated due to reaction about $\mathrm{C}$ - $\mathrm{C}$ axis of an organic molecule, are examples for
1 Geometrical isomerism
2 Conformational isomerism
3 Optical isomerism
4 Structural isomerism
Explanation:
Different structure generated due to rotation about $\mathrm{C}-\mathrm{C}$ axis of organic molecule is conformational isomerism. In this conformation one bond is fixed and rotation around $\mathrm{C}-\mathrm{C}$ double bond and energy barrier is low.
J and K CET-(2007)
GENERAL ORGANIC CHEMISTRY
232112
n-pentane and 2-methylbutane are a pair of
1 Enantiomers
2 Stereoisomers
3 Diastereomers
4 Constitutional isomers
Explanation:
(D) : These pairs are comes in constitutional isomer. Constitutional isomer is also called structural isomer or chain isomer.
J and K CET-(2006)
GENERAL ORGANIC CHEMISTRY
232100
2-Pentanone and 3-methyl-2-butanone are a pair of...........isomers.
1 functional
2 chain
3 positional
4 stereo
Explanation:
Structure of 2-pentanone \& 3 methyl 2butanone it has difference in parent chain 5-carbon chain $\quad 4$ carbon chain So, it comes under chain isomer.
232093
Which among the following conformations is the most stable for cyclohexame?
1 Boat conformation
2 Chair conformation
3 Skew conformation
4 Gauche conformation
Explanation:
The most stable conformations for cyclohexane is chair form because it has low rotational energy so, it has more stability. In chair form C-C-C bond are very close to $109^{\circ} .28^{\prime}$ so it almost free of angle stain. It is also fully staggered conformation so free torsional stain. Chair form of cyclohexane
J and K CET-(2019)
GENERAL ORGANIC CHEMISTRY
232111
Different structures generated due to reaction about $\mathrm{C}$ - $\mathrm{C}$ axis of an organic molecule, are examples for
1 Geometrical isomerism
2 Conformational isomerism
3 Optical isomerism
4 Structural isomerism
Explanation:
Different structure generated due to rotation about $\mathrm{C}-\mathrm{C}$ axis of organic molecule is conformational isomerism. In this conformation one bond is fixed and rotation around $\mathrm{C}-\mathrm{C}$ double bond and energy barrier is low.
J and K CET-(2007)
GENERAL ORGANIC CHEMISTRY
232112
n-pentane and 2-methylbutane are a pair of
1 Enantiomers
2 Stereoisomers
3 Diastereomers
4 Constitutional isomers
Explanation:
(D) : These pairs are comes in constitutional isomer. Constitutional isomer is also called structural isomer or chain isomer.
J and K CET-(2006)
GENERAL ORGANIC CHEMISTRY
232100
2-Pentanone and 3-methyl-2-butanone are a pair of...........isomers.
1 functional
2 chain
3 positional
4 stereo
Explanation:
Structure of 2-pentanone \& 3 methyl 2butanone it has difference in parent chain 5-carbon chain $\quad 4$ carbon chain So, it comes under chain isomer.
232093
Which among the following conformations is the most stable for cyclohexame?
1 Boat conformation
2 Chair conformation
3 Skew conformation
4 Gauche conformation
Explanation:
The most stable conformations for cyclohexane is chair form because it has low rotational energy so, it has more stability. In chair form C-C-C bond are very close to $109^{\circ} .28^{\prime}$ so it almost free of angle stain. It is also fully staggered conformation so free torsional stain. Chair form of cyclohexane
J and K CET-(2019)
GENERAL ORGANIC CHEMISTRY
232111
Different structures generated due to reaction about $\mathrm{C}$ - $\mathrm{C}$ axis of an organic molecule, are examples for
1 Geometrical isomerism
2 Conformational isomerism
3 Optical isomerism
4 Structural isomerism
Explanation:
Different structure generated due to rotation about $\mathrm{C}-\mathrm{C}$ axis of organic molecule is conformational isomerism. In this conformation one bond is fixed and rotation around $\mathrm{C}-\mathrm{C}$ double bond and energy barrier is low.
J and K CET-(2007)
GENERAL ORGANIC CHEMISTRY
232112
n-pentane and 2-methylbutane are a pair of
1 Enantiomers
2 Stereoisomers
3 Diastereomers
4 Constitutional isomers
Explanation:
(D) : These pairs are comes in constitutional isomer. Constitutional isomer is also called structural isomer or chain isomer.
J and K CET-(2006)
GENERAL ORGANIC CHEMISTRY
232100
2-Pentanone and 3-methyl-2-butanone are a pair of...........isomers.
1 functional
2 chain
3 positional
4 stereo
Explanation:
Structure of 2-pentanone \& 3 methyl 2butanone it has difference in parent chain 5-carbon chain $\quad 4$ carbon chain So, it comes under chain isomer.
