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Identify the most stable conformer of gl...

Identify the most stable conformer of glycol.

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Gauche form of glycol is most stable. This is due to intramolecular hydrogen bonding.
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Consider the following conformations of 3-Aminopropanal, amongst the given conformations (P, Q, R, S) one of them is most stable. The correct statements for the above is/are : (I) H-bonding is present in the most stable conformer (II) Gauche conformation is the most stable conformer (III) Anti conformation is the most stable conformer (IV) larger groups being separated by maximum distance in the conformer

Consider the following conformations of 3-Aminopropanal, amongst the given conformations (P, Q, R, S) one of them is most stable. The correct statements for the above is/are (I) H-bonding is present in the most stable conformer (II) Gauche conformation is the most stable conformer (III) Anti conformation is the most stable conformer (IV) larger groups being separated by maximum distance in the conformer

Which of the following is the most stable conformer of 1, 2, 4 -trimethyl cyclohexane

How many of the following statements are correct? 1) The most stable conformer of cis-1, 3-cyclohexanediol is chair form. 2) Cis- 1, 3- cyclohexanediol is more stable than trans -1, 3-cyclohexanediol. 3) In Cis 1, 3-cyclohexanediol both the OH groups occupy equitorial positions. 4) The most stable conformer of trans -1, 4-cyclohexanediol is chair form. 5) The most stable conformer of cis-1, 4-cyclohexanediol is boat conformer.

Stereoisomers, which can be interconverted simply by rotation about sigma bonds, are conformational isomers while those, which can be converted only by breaking and remaking of bonds and not simply by rotation, are called configurational isomers. The angle between C-C and C – H bonds on adjacent carbon atoms in any conformation is called dihedral angle. The cyclic compounds most commonly found in nature containing six membered rings can exist in a conformation that is almost completely free of strain. The most stable conformation of cyclohexane is chair form. According to Bayer strain theory, the greater deviation from the normal tetrahedral angle, greater is the angle strain or torsional strain and hence lesser is the stability of the cycloalkane. Which among the following conformation of cyclohexane is the most stable form ?

Stereoisomers, which can be interconverted simply by rotation about sigma bonds, are conformational isomers while those, which can be converted only by breaking and remaking of bonds and not simply by rotation, are called configurational isomers. The angle between C-C and C – H bonds on adjacent carbon atoms in any conformation is called dihedral angle. The cyclic compounds most commonly found in nature containing six membered rings can exist in a conformation that is almost completely free of strain. The most stable conformation of cyclohexane is chair form. According to Bayer strain theory, the greater deviation from the normal tetrahedral angle, greater is the angle strain or torsional strain and hence lesser is the stability of the cycloalkane. Dihedral angle in staggered (gauche) and eclipsed conformation are:

What are conformers?

The most stable carbonium ion is

AAKASH SERIES-ALCOHOLS, PHENOLS AND ETHERS-ETHERS (OBJECTIVE EXERCISE-4)
  1. Identify the most stable conformer of glycol.

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  2. (A): Alcoholic fermentation involves conversion of sugar into ethanol ...

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  3. (A) Sodium can't be used for drying ethyl alcohol. (R) Sodium di...

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  4. (A) Ethyl alcohol is soluble in organic solvents (R) Ethyl alcoho...

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  5. (A) The boiling point of C2H5OH is less than that of H2O , though the...

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  6. (A) Addition of C2H5OH to CH3 MgI gives methane. (R) C2H5OH is mor...

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  7. (A): Oxidation of tertiary alcohols requires strong oxidising agent an...

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  8. (A) Acetone and propenol-2 are tautomers. (R) Propanone and propen...

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  9. (A) Alcohols act as Bronsted - Lowry bases. (R) In alcohols the lo...

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  10. (A) Anhydrous ZnCl2 is used in reaction of alcohols with HCI. (R)...

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  11. (A) Alcohols can act as nucleophiles (R) Alcohols form salts with...

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  12. (A) Tertiary alcohols are more reactive for nucleophilic substitution ...

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  13. (A) Reactivity of primary alcohol is more than secondary alcohols towa...

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  14. (A) The bond angle C-O-H in alcohol is less than in phenols (R) I...

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  15. (A) In ethers, bond angle C-O-C is more than tetrahedral angle (R...

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  16. (A) n-propyl alcohol is prepared from propene by the action of B2H6 f...

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  17. (A) During acid catalysed esterification, oxygen atom of alcohol is pr...

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  18. (A) Lucas reagent is used to distinguish 1^@ , 2^@ and 36@ alcohols ...

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  19. (A) Addition of water to (CH3)2 - C = CH - CH3 gives (CH3)2 - COH - C...

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  20. (A) 1-propanol & 2-propanol can be distinguished by haloform test ...

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  21. (A) Alcohols are acidic in nature but donot react with NaOH solution ...

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