Correct matching about composition of portland cement is {:("List - I","List - II"),("I) "Al_(2)O_(3),"A) "50-60%),("II) "CaO,"B) "20-25%),("III) "SiO_(2),"C) "5-10%),("IV) "MgO,"D) "2-3%):}

Correct matching about composition of portland cement is {:("List - I

1.	Correct matching about composition of portland cement is {:("List - I","List - II"),("I) "Al_(2)O_(3),"A) "50-60%),("II) "CaO,"B) "20-25%),("III) "SiO_(2),"C) "5-10%),("IV) "MgO,"D) "2-3%):}
Answer» `{:("UL(I),ul(II),ul(III),ul(IV)),(C,A,B,D):}` `{:("ul(I),ul(II),ul(III),ul(IV)),(A,B,C,D):}` `{:("ul(I),ul(II),ul(III),ul(IV)),(A,C,B,D):}` `{:("ul(I),ul(II),ul(III),ul(IV)),(C,A,D,B):}` Answer :A