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alkenes are reducing agentsWhy does acidified KMnO4 turn colorless in alkenes?
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alkenes are reducing agentsWhy does acidified KMnO4 turn colorless in alkenes?
and by the way,from where did u get this paper 3 revision sheethere u go , Q3
from some thread on xpc , dnt rememebrand by the way,from where did u get this paper 3 revision sheet
Hydroxides:
I was Just solving this paperhow is it C shdnt it b A View attachment 42765
From the diagram, it appears that the metal case does not go back to the beginning so that means current wouldn't flow after it reaches the cable so its not a full circuit. Ofcourse, u can argue otherwise however u must remember that CIE is looking for the "most suitable answer" so the most plausible answer in those options is that someone will receive a shock because as soon as he touches it, the circuit is complete.how is it C shdnt it b A View attachment 42765
Because KMnO4 is a good oxidizing agent. It's not your average good oxidizing agent, but a super one. It breaks the double bond present in alkenes, which allows them to form more bonds with other elements. The oxygen molecules from KMnO4, since there are a total of 4, they move on to the alkene, and 2 are added to either side.Why does acidified KMnO4 turn colorless in alkenes?
omg WOW i usually get between 25-29 out of 40 in solving these papers..... I see many physics geniuses out there ..so high curvesss noooooI was Just solving this paper
Got 39/40
Just because of this strange question
Well , I think that we should understand the way the plastic supports the metal case
lol , i also scored 35 , worst paperomg WOW i usually get between 25-29 out of 40 in solving these papers..... I see many physics geniuses out there ..so high curvesss nooooo
in chem M/J 2011 p32 Q 8a(iv) how can we know the moles of water???Assalam-o-Alaikum.
Post your Physics, Chemistry and Biology doubts in here and members, along with me will try their best to help you out.
we evaporate to remove the liquid completely which would form anhydrous crystals, while in crystallisation we don't remove the water r crystallisation nd obtain hydrated crystals.....A very simple question from me... What is the difference between evaporation and crystallisation... What does one method offer that the other does not? I'm posing this question because both methods of separation seem to satisfy the same objective: extracting a dissolved substance from a solution...
me too!!I was Just solving this paper
Got 39/40
Just because of this strange question
Well , I think that we should understand the way the plastic supports the metal case
ok,may you upload the ones related to light,electricity and atomic physicsfrom some thread on xpc , dnt rememebr
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