Among these, positional isomers are

Methyl groups are at different position with respect to each other. 125. The number of isomeric ethers with molecular formula C4H10O are (a) one (b) two (c) three (d) four The number of isomeric ethers with molecular formula 4 10 C H O is given as- Thus, the correct option is (c) three 126. The total number of isomers in C6H3Cl3 (a) two (b) three (c) four (d) five 6 3 3 C H Cl is named as tri chloro benzene. Here, there are 6- carbon, 3-hydrogen and 3-chlorine. The isomer is shown below- (a)-1,2,3-trichlorobenzene (b) 1,2,4-trichlorobenzene (c)-1,3,5-tricholorobenzene Thus, the correct opti