Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination , this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose `beta`-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol gt secondary school gt Primary alcohol. Which of the following dehydration product (major ) is incorrect ?A. B. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-oversetoverset(OH)(|)CH-CH_3underset(Delta)overset(conc.H_2SO_4)to CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH=CH_2`C. `CH_3CH_2CH_2CH_2OHunderset(Delta)overset(conc.H_2SO_4)to CH_3-CH=CH-CH_3`D.

Alcohols undergo acid catalysed elimination reactions to produce alken

1.	Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination , this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose `beta`-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol gt secondary school gt Primary alcohol. Which of the following dehydration product (major ) is incorrect ?A. B. `CH_3-undersetunderset(CH_3)(\|)oversetoverset(CH_3)(\|)C-oversetoverset(OH)(\|)CH-CH_3underset(Delta)overset(conc.H_2SO_4)to CH_3-undersetunderset(CH_3)(\|)oversetoverset(CH_3)(\|)C-CH=CH_2`C. `CH_3CH_2CH_2CH_2OHunderset(Delta)overset(conc.H_2SO_4)to CH_3-CH=CH-CH_3`D.
Answer» Correct Answer - B

Discussion

No Comment Found

Related InterviewSolutions

In the given reaction : `overset(Conc. H_2SO_4)to` [X] as major product [X] will be :A. B. C. D.
On heating glycerol with conc. `H_2SO_4`, a compound obtained which has an unpleasant odour. This compound is :A. ethylene glycolB. allyl alcoholC. acroleinD. glycerol sulphate
Reaction of benzene with isobutylchloride `(CH_3CH(CH_3)CH_2Cl)` in the presence of anhydrous `AlCl_3` yields.A. tert-butylbenzeneB. iso-butylbenzeneC. n-butylbenzeneD. chlorobenzene
For a Friedel - Craft reaction using `AlCl_3`which compound can be used as solvent, benzene or nitrobenzene ?A. nitrobenzene but not benzeneB. benzene but not nitrobenzeneC. both benzene and nitrobenzeneD. neither benzene nor nitrobenene
The best sequence of reactions for preparation of the following compound from benzene is A. (i)`CH_3`COCl/`AlCl_3` (ii)Oleum (iii)`(CH_3)_2`CH-Cl(1 mole ) /`AlCl_3`B. (i)`(CH_3)_2CH-Cl` (1 mole)/`AlCl_3` (ii)`CH_3COCl//AlCl_3`(iii)OleumC. (i)Oleum (ii)`CH_3COCl//AlCl_3` (iii)`(CH_3)_2CH-Cl`(1 mole) /`AlCl_3`D. (i)`(CH_3)_2CH-Cl`(1 mole) /`AlCl_3`(ii) Oleum (iii)`CH_3CO Cl//AlCl_3`
Major product of mononitration of the following compound is : A. B. C. D.
Presence of a nitro group in a benzene ring:A. activates the ring towards electrophilic substitution.B. renders the ring basicC. deactivates the ring towards nucleophilic substitutionD. deactivates the ring towards electrophilic substitution
The relative rates of mononitration of `R-C_6H_5` where `R=CH_3, -NO_2, -OH , -Cl` are :A. `CH_3 gt OH gt NO_2 gt Cl`B. `OH gt Cl gt CH_3 gt NO_2`C. `OH gt CH_3 gt NO_2 gt Cl`D. `OH gt CH_3 gt Cl gt NO_2`
Which of the following cannot be considered as a step of mechanism in chain reaction of methane with `Cl_2` ?A. `Cl_2 to Cl^(**)`B. `CH_4+Cl^(**)to CH_3Cl + H^(**)`C. `Cl^(**)+CH_4 to CH_3^(**)+HCl`D. `Cl^(**)+CH_3^(**)to CH_3Cl`
2-Methylbutane on reaction with bromine in the presence of sunlight gives mainly-A. 1-Bromo-3-methylbutaneB. 1-Bromo-2-methylbutaneC. 2-Bromo-3-methylbutaneD. 2-Bromo-2-methylbutane

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment