The foods we eat, the air we breathe, cleaning chemicals, our emotions and literally every object that we can see or touch, love, jealousy, infatuation and all share in chemistry. For all living things to function and survive, their bodies perform various chemical processes.

Log_2aa=x    then, a=(2a)^x  ......(1)

Log_3a2a=y    then,2a=(3a)^y ......(2)

Log_4a 3a=z  then, 3a=(4a)^z ......(3)

So, 

a=(2a)^x  [from (1)]

Or, a=(3a)^xy    [from(2)]

Or, a=(4a)^xyz     [from(3)]

Multiplying both sides by 4a,

4a.a=4a.(4a)^xyz  

Or,(2a)² =(4a)^{xyz + 1} 

Or,(3a)^2y =(4a)^xyz+1 

Or,(4a)^2yz =(4a)^xyz+1 

Or, 2yz = xyz+1 .proved.

In benzene molecule, carbon and carbon bond can't have polarity because there is not any electronegativity difference and the carbon hydrogen is also not much polar because the electronegativity difference is almost zero and also the small pull due to small difference in Electronegativity is balanced due to even pull from all directions.

In chlorobenzene the electronegativity difference between carbon and chlorine is very high so, it is polar.

(to compare polarity first check electronegativity...

तपाईंको जीवनमा सामाजिक अधययनले के कसता सकारातमक परभाव परेका छन , बुँदागत रुपमा  लेखनुहोस I

सामाजिक अधययनले मेरो जीवनका पारेका सकारातमक अधययन निमनाअनुसार बुँदागत  रुपमा परसतुत गरेको छु :

1. मैले संविधान वयवसथा गरेको हक, अधिकार, करतवय, दायितव आदि बारे बुझन पाएको छु I

2. मैले करतवयपरायणताको भाव बोध गरेको छु I

3. समाजका रीतिरिवाज, संसकार, परमपरा आदिको अधययनबाट फरक परिवेशमा समेत समावेशन हुन सकने    सिपको विकास गरेको छु I 

4. राषटरिय समपदाको संरकषण र देशको पृषठभूमिपरति पुरखाले...

Yes, a vector which has zero magnitude is also a vector in case of two vectors travelling in opposite directions with equal magnitudes. At this case, the resultant vector has zero magnitude but it is still a vector. We call it a null vector.