Chemistry MCQ thread...

[sweetiepie]

viewtopic.php?f=26&t=9088 plzz help heree urgent..

 

[Zishi]

A dibromoalkane CH3CH2CHBrCHBrCH2CH3 was treated with excess alcoholic
potassium hydroxide. The main product would be
A CH3CH2CH(OH)CH(OH)CH2CH3
B CH3CH2CH2O-K+
C CH3CH=CH-CH=CHCH3
D CH3CH2CH=CHCH2CH3

C

 

[hassam]

tru

 

[Zishi]

tru

You mean all my answers are true? :unknown:

 

[hassam]

 

[xHazeMx]

A dibromoalkane CH3CH2CHBrCHBrCH2CH3 was treated with excess alcoholic
potassium hydroxide. The main product would be
A CH3CH2CH(OH)CH(OH)CH2CH3
B CH3CH2CH2O-K+
C CH3CH=CH-CH=CHCH3
D CH3CH2CH=CHCH2CH3

C

i read it as KCN in ethanol my bad

 

[xHazeMx]

A

 

[Zishi]

B, I guess.

 

[hassam]

The compound least likely to be formed when gaseous ethene is bubbled into a
mixture of aqueous bromine and aqueous sodium chloride is
A CH2BrCH2Br
B CH2BrCH2OH
C CH2BrCH2Cl
D CH2ClCH2Cl

 

[Zishi]

The compound least likely to be formed when gaseous ethene is bubbled into a
mixture of aqueous bromine and aqueous sodium chloride is
A CH2BrCH2Br
B CH2BrCH2OH
C CH2BrCH2Cl
D CH2ClCH2Cl

D

 

[xHazeMx]

The compound least likely to be formed when gaseous ethene is bubbled into a
mixture of aqueous bromine and aqueous sodium chloride is
A CH2BrCH2Br
B CH2BrCH2OH
C CH2BrCH2Cl
D CH2ClCH2Cl

D as there is Cl^- ion only

 

[hassam]

 

[hassam]

ya both tru zisi that solubility and CL one

 

[xHazeMx]

A

 

[abdullah181994]

can a ester react with carboxlic acid

 

[xHazeMx]

can a ester react with carboxlic acid

no

 

[Zishi]

A

 

[abdullah181994]

is it A

 

[Zishi]

can a ester react with carboxlic acid

no

But it can hydrolyse an ester up to a "VERY" low extent. There was a MCQ about it.

 

[hassam]

yess