232144
The number of optical isomers of the compound $\mathrm{CH}_{3}-\mathrm{CHBr}-\mathrm{CHBr}-\mathrm{COOH}$ is
1 0
2 1
3 3
4 4
Explanation:
No. of optical isomer $=2^{\mathrm{n}}$ When center is disimilar Where $\mathrm{n}$ is no. of chiral center
Karnataka CET-2013
GENERAL ORGANIC CHEMISTRY
232147
Which one of the following is the most energetic conformation of cyclohexane?
1 Boat
2 Twisted boat
3 Chair
4 Half chair
Explanation:
Most energetic conformation (least stable) of cyclohexane is half chair form
Karnataka CET-2011
GENERAL ORGANIC CHEMISTRY
232149
Which one of the following conformations of cyclohexane is the least stable?
1 Half-chair
2 Boat
3 Twisted-boat
4 Chair
Explanation:
The stability order of conformation of cyclohexane is chair $>$ twist boat $>$ half-chair Hence, half-chair is less stable due to torsional and angle strain.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232150
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
1 geometrical isomerism
2 optical isomerism
3 neither optical nor geometrical isomerism
4 both optical and geometrical isomerism
Explanation:
When acetaldehyde is treated with aqueous sodium hydroxide solution The obtained alkene shows geometrical isomerism.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232151
Methoxy methane and ethanol are
1 position isomers
2 chain isomers
3 functional isomers
4 optical isomers
Explanation:
Exp : (C) : In methoxy methane and ethanol both molecular formula is same molecular formula that is $\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$. But functional groups are different, so they are functional isomers. In methox methane functional group is ether and in ethanol functional group is alcohol.
232144
The number of optical isomers of the compound $\mathrm{CH}_{3}-\mathrm{CHBr}-\mathrm{CHBr}-\mathrm{COOH}$ is
1 0
2 1
3 3
4 4
Explanation:
No. of optical isomer $=2^{\mathrm{n}}$ When center is disimilar Where $\mathrm{n}$ is no. of chiral center
Karnataka CET-2013
GENERAL ORGANIC CHEMISTRY
232147
Which one of the following is the most energetic conformation of cyclohexane?
1 Boat
2 Twisted boat
3 Chair
4 Half chair
Explanation:
Most energetic conformation (least stable) of cyclohexane is half chair form
Karnataka CET-2011
GENERAL ORGANIC CHEMISTRY
232149
Which one of the following conformations of cyclohexane is the least stable?
1 Half-chair
2 Boat
3 Twisted-boat
4 Chair
Explanation:
The stability order of conformation of cyclohexane is chair $>$ twist boat $>$ half-chair Hence, half-chair is less stable due to torsional and angle strain.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232150
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
1 geometrical isomerism
2 optical isomerism
3 neither optical nor geometrical isomerism
4 both optical and geometrical isomerism
Explanation:
When acetaldehyde is treated with aqueous sodium hydroxide solution The obtained alkene shows geometrical isomerism.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232151
Methoxy methane and ethanol are
1 position isomers
2 chain isomers
3 functional isomers
4 optical isomers
Explanation:
Exp : (C) : In methoxy methane and ethanol both molecular formula is same molecular formula that is $\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$. But functional groups are different, so they are functional isomers. In methox methane functional group is ether and in ethanol functional group is alcohol.
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GENERAL ORGANIC CHEMISTRY
232144
The number of optical isomers of the compound $\mathrm{CH}_{3}-\mathrm{CHBr}-\mathrm{CHBr}-\mathrm{COOH}$ is
1 0
2 1
3 3
4 4
Explanation:
No. of optical isomer $=2^{\mathrm{n}}$ When center is disimilar Where $\mathrm{n}$ is no. of chiral center
Karnataka CET-2013
GENERAL ORGANIC CHEMISTRY
232147
Which one of the following is the most energetic conformation of cyclohexane?
1 Boat
2 Twisted boat
3 Chair
4 Half chair
Explanation:
Most energetic conformation (least stable) of cyclohexane is half chair form
Karnataka CET-2011
GENERAL ORGANIC CHEMISTRY
232149
Which one of the following conformations of cyclohexane is the least stable?
1 Half-chair
2 Boat
3 Twisted-boat
4 Chair
Explanation:
The stability order of conformation of cyclohexane is chair $>$ twist boat $>$ half-chair Hence, half-chair is less stable due to torsional and angle strain.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232150
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
1 geometrical isomerism
2 optical isomerism
3 neither optical nor geometrical isomerism
4 both optical and geometrical isomerism
Explanation:
When acetaldehyde is treated with aqueous sodium hydroxide solution The obtained alkene shows geometrical isomerism.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232151
Methoxy methane and ethanol are
1 position isomers
2 chain isomers
3 functional isomers
4 optical isomers
Explanation:
Exp : (C) : In methoxy methane and ethanol both molecular formula is same molecular formula that is $\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$. But functional groups are different, so they are functional isomers. In methox methane functional group is ether and in ethanol functional group is alcohol.
232144
The number of optical isomers of the compound $\mathrm{CH}_{3}-\mathrm{CHBr}-\mathrm{CHBr}-\mathrm{COOH}$ is
1 0
2 1
3 3
4 4
Explanation:
No. of optical isomer $=2^{\mathrm{n}}$ When center is disimilar Where $\mathrm{n}$ is no. of chiral center
Karnataka CET-2013
GENERAL ORGANIC CHEMISTRY
232147
Which one of the following is the most energetic conformation of cyclohexane?
1 Boat
2 Twisted boat
3 Chair
4 Half chair
Explanation:
Most energetic conformation (least stable) of cyclohexane is half chair form
Karnataka CET-2011
GENERAL ORGANIC CHEMISTRY
232149
Which one of the following conformations of cyclohexane is the least stable?
1 Half-chair
2 Boat
3 Twisted-boat
4 Chair
Explanation:
The stability order of conformation of cyclohexane is chair $>$ twist boat $>$ half-chair Hence, half-chair is less stable due to torsional and angle strain.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232150
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
1 geometrical isomerism
2 optical isomerism
3 neither optical nor geometrical isomerism
4 both optical and geometrical isomerism
Explanation:
When acetaldehyde is treated with aqueous sodium hydroxide solution The obtained alkene shows geometrical isomerism.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232151
Methoxy methane and ethanol are
1 position isomers
2 chain isomers
3 functional isomers
4 optical isomers
Explanation:
Exp : (C) : In methoxy methane and ethanol both molecular formula is same molecular formula that is $\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$. But functional groups are different, so they are functional isomers. In methox methane functional group is ether and in ethanol functional group is alcohol.
232144
The number of optical isomers of the compound $\mathrm{CH}_{3}-\mathrm{CHBr}-\mathrm{CHBr}-\mathrm{COOH}$ is
1 0
2 1
3 3
4 4
Explanation:
No. of optical isomer $=2^{\mathrm{n}}$ When center is disimilar Where $\mathrm{n}$ is no. of chiral center
Karnataka CET-2013
GENERAL ORGANIC CHEMISTRY
232147
Which one of the following is the most energetic conformation of cyclohexane?
1 Boat
2 Twisted boat
3 Chair
4 Half chair
Explanation:
Most energetic conformation (least stable) of cyclohexane is half chair form
Karnataka CET-2011
GENERAL ORGANIC CHEMISTRY
232149
Which one of the following conformations of cyclohexane is the least stable?
1 Half-chair
2 Boat
3 Twisted-boat
4 Chair
Explanation:
The stability order of conformation of cyclohexane is chair $>$ twist boat $>$ half-chair Hence, half-chair is less stable due to torsional and angle strain.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232150
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
1 geometrical isomerism
2 optical isomerism
3 neither optical nor geometrical isomerism
4 both optical and geometrical isomerism
Explanation:
When acetaldehyde is treated with aqueous sodium hydroxide solution The obtained alkene shows geometrical isomerism.
Karnataka CET
GENERAL ORGANIC CHEMISTRY
232151
Methoxy methane and ethanol are
1 position isomers
2 chain isomers
3 functional isomers
4 optical isomers
Explanation:
Exp : (C) : In methoxy methane and ethanol both molecular formula is same molecular formula that is $\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$. But functional groups are different, so they are functional isomers. In methox methane functional group is ether and in ethanol functional group is alcohol.
