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Chemistry: Post your doubts here!

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Apart from general guessing, can this question be solved arithmetically?
Look 1 mol is produced by cracking the ethene, methane n propene 0.5 mol of ethene already given in the question so we need to find the ratio of other products mol so like 0.5+0.25+0.25= 1 mole to convert it into whole number we just multiply with 4 so by adding them we will get 8 carbon altogether
 
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^ Here I have solved this question before.

I had the same problem in this question when I solved this paper but now after repeated tries I was able to solve it correctly Alhamdulillah.
First find the value of the constant K as the angle of deflection is directly proportional to the charge mass ratio
PROTON:
Angle=+15 Charge= + mass= 1
15= k(+/1) thus K=+15

Option 1 :
Charge= +1-2= -1
mass= (atomic mass) 1+2=3
k=+15
Angle= (+15)*(-1/3)= -5..............option 1 correct

Option 2 :
Charge = +3-5 = -2
mass=3+3 =6
K=+15
Angle = (+15)*(-2/6) = -5..................option 2 is also correct

Option 3 :
Charge :4-1 = +3
mass=4+5 =9
K=+15
Angle = (+15)*(+3/9) = +5.......................Option 3 is incorrect.

Ans: B :)
 
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