Multiple choice The catalyst used in the manufacture of polythene by Ziegler method is titanium tetrachloride lithium chloride triethylaluminium both triethylaluminium and titanium tetrachloride triphenylaluminium Reveal answer Fill a bubble to check yourself D Correct answer Explanation The catalyst used in the manufacture of polythene by Ziegler method is triethylaluminium and titanium tetrachloride.