Heats of combustion of C_2H_4, H_2 and C_2H_6 are -1409 K.J, -285 K.J and -1558 KJ. Heat of hydrogenation of ethylene is

Heats of combustion of C_2H_4, H_2 and C_2H_6 are -1409 K.J, -285 K.J

1.	Heats of combustion of C_2H_4, H_2 and C_2H_6 are -1409 K.J, -285 K.J and -1558 KJ. Heat of hydrogenation of ethylene is
Answer» `-136 KJ` `-240 KJ ` `136 KJ` ` 227 KJ` ANSWER :A