The formula for rust is:

(A) FeO

(B) Fe2O3

(C) Fe3O4

(D) Fe2O3 xH2O

Answer Posted / pisgahchemist

Actually, rust can take several forms. Under water, rust is
Fe(OH)3, and dehydrated rust is Fe2O3. But the rust that
most of us see is FeO(OH), which unfortunately is not listed
among the "answers". Too bad the item writer isn't aware of
this. The best answer among those which are given is (D),
the hydrated iron(III) oxide.

Is This Answer Correct ?    14 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

highest depots present in which district

2096


Name any Veteran Olympian Medalist and Politician.

664


Do you have any idea about Common wealth games? In which year they will be held?

671


state the full form of cpu.

693


What will be the max. salary for multitasking staff in pay band 5200-20200 with grade pay 1800.

2930






What are your views on Kashmir issues?

742


name the father of indian constitution.

714


Please tell something about ex-president APJ Kalam. Why was he so popular?

660


Which cells help in the production of antibodies?

667


Pls send me general knowledge question for State bank of india Clerks Interview.

1723


from where was india's first satellite launched?

710


sir i wanted that u send me the last 6 months current affairs&g.k to my e-mail add. thank you

1668


The British Broadcasting Corporation BBC, selected whom as the ' Women of Millennium'?

680


Who is the author of the book 'Half a Life'?

725


What is the Currency for Hongkong?

634