Chemistry MCQ thread...

[intel1993]

hey can any one tell me how so2 can be converted to so3 in atmosphere as catalytic conditions are not there for its concersion........????

 

[Saturation]

hey can any one tell me how so2 can be converted to so3 in atmosphere as catalytic conditions are not there for its concersion........????

This is the process:

2NO + O2 = 2NO2

SO2 + NO2 = SO3 + NO (Notice NO is produced at the end, so it's "acting" like a catalyst)

 

[intel1993]

ok got dat.........

 

[intel1993]

Q)which chlorine compound has bonding that can be described as ionic with some covalent character?

A) sodium choloride
B) magnesium chloride
C) AlCl3
D) SiCl4

 

[Abdulrab]

is it B ???

 

[sweetiepie]

B!!
magnesium choride
NaCl is totally ionic
AlCl3 is covalent, cuz when it dimerises, it's a gas which is covalent
and SiCl4 is totally covalent

I HOPE ITX CLEAR TO U..

 

[libra94]

Q)which chlorine compound has bonding that can be described as ionic with some covalent character?

A) sodium choloride
B) magnesium chloride
C) AlCl3
D) SiCl4

its B!!

 

[intel1993]

k thnx get that

 

[Abdulrab]

BUT mg has a high charge density so it will have a high polarising power so it will attract the electron towards it self so it will hav covalent character !!! watta u say ??

 

[kingmanu]

 

[abdullah181994]

please explian

 

[abdullah181994]

ANS is B

 

[sweetiepie]

@kingmanu

ITX B...

 

[libra94]

B!
butan-2-ol can be in 2 types (on the 2nd or the 4th carbon lets say)
so it'll produce 3 alkenes upon dehydration

 

[abdullah181994]

@kingmanu

ITX B...

two alkenes would be formed and 1 is cis trans so 3

 

[RafaySid]

please explian

It's already explained, check a few pages earlier.

 

[abdullah181994]

B!
butan-2-ol can be in 2 types (on the 2nd or the 4th carbon lets say)
so it'll produce 3 alkenes upon dehydration

no one is cis trans

 

[libra94]

please explian

5HIO---->2I2 + HIO3 +4H2O

 

[watscrackin]

how on earth is the answer C?

 

[kingmanu]

B!
butan-2-ol can be in 2 types (on the 2nd or the 4th carbon lets say)
so it'll produce 3 alkenes upon dehydration

no one is cis trans

please explain how u get 3 alkenes