two forces p and q acting at a pt. are such that if p is reversed the direction of resultant is turned by 90 degrees,then

P=Q

P=2Q

P=root2Q

none

this question is very simple.first consider the total possibilities i.e. 12c3.then consider all the cases in which one,two and all the three boys do not get even a single fruit and subtract those cases from total no. of cases which will give you the answer.

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1.please tell me which chemical compound's common name is mohr's salt.kindly give its equivalent mass also.

 

2.complete combustion of 0.858 g of a compound x gives 2.63 g of CO₂  & 1.28 g of H₂O.the lowest molecular mass of x is

172

129

86

43

see in a compound the tendency of an electron of an atom in any element present in the compound(in this case H,P & O) is to move to different orbitals.here the empty or vacant d orbital of phosphorus is filled by one electron which comes from its p orbital.since s and p orbitals all are half filled and one d orbital is filled with one electron its sp3d which means 1,3,1 electron in s,p,d orbital resp.

i can't explain much better than this if i'm wrong(which i'm sure not) or i'm unable to explain you clearly don't rate me and ask your doubt from a forum expert

hey nishant i don't know the answers that's why i'm asking them