CBSE
Multiple Choice QuestionsThe major product formed in the following reaction is
(CH3)2CH-CH2OCH3
CH3-CH(OCH3)-CH2CH3
CH3-C(CH3)=CH2
(CH3)2-C-OCH3- CH3
The correct increasing order of the reactivity of halides for SN 1 reaction is
CH3- CH2- X<(CH3)2CH= X <CH2= CH-CH2- X< PhCH2- X
(CH3)2CH-X <CH3-CH2- X < CH2= CH - CH2-X < PhCH2-X
PhCH2- X<(CH3)2CH=X<CH3-CH2-X<CH2= CH- CH2- X
CH2= CH - CH2- X < Ph- CH2- X <(CH3)2CH-X <CH3-CH2- X
The major product obtained on treatment of CH3CH2CH(F)CH3 with CH3O/CH3OH is
CH3CH2CH(OCH3)CH3
CH3CH = CHCH3
CH3CH2CH = CH2
CH3CH2CH2CH2OCH3
IUPAC name of
CH3CH2C(Br)=CH-Cl is :
2 - bromo - l - chloro butene - 1
1 - chloro - 2 - bromo - butene
3 - chloro - 2 - bromo butene - 2
none of these
Which ofthe following compounds has the highest boiling point?
CH3CH2CH2Cl
CH3CH2CH2CH2Cl
CH3CH(CH3)CH2Cl
(CH3)3CCl
CH3CO2C2H5 on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acid gives B. Compound B is
CH3COCH2COOH
CH3COCH3
CH2=C(OC2H5)2
SN2 mechanism is involed in the following substitution :
CH3-CH2-Cl + OH-
(CH3)2-C(Cl)-CH3-OH-
(CH3)2-C-Cl + OH-
CH3-CH2-(CH3)C(Cl)-CH3 + OH-
Arrange the hydra - acids of halogens in increasing order of acidity .
HF < HCl < HBr < HI
HI < HBr < HCl < HF
HF < HBr < HI <HCl
HF < HI < HBr < HCl
Which of the following sequence of reactions (reagents) can be used for the conversion of C6H5CH2CH3 into C6H5CH=CH2?
SOCl2 ; H2O
SO2Cl2; alc. KOH
Cl/h; H2O
SOCl2 ; alc. KOH.
Chloroform , when kept open , is oxidised to :
CO2
COCl2
CO2 , Cl2
none of these
