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
What will you say about Kaveri River water dispute?
Talk about politics? What should be said we it is asked in HR interview?
Name the Noble prize winner for Economics in 2017.
Hi Friends, Can anyone tell me regarding written test of KAS exam? Ambiguity for me in this case is, do we need to write answers of 3 or 4 pages ? And can any one tell me what kinds of questions(few examples) we will get for general exams??
In the year 2012, name the company which acquired SlideShare for USD 118.75 million?
What is the state dance of your native state?
Who is the chief election commissioner of India?
Lancer is the product of which company?
What is the currency of Italy?
What are your views on Kashmir issues?
Which state is called City of Joy?
Who wrote "Vandematharam" ?
The Peramble of the Indian Constitution reads ? a) We, the people of India……….adopt, enact and give to India this Constitution b) We, the people of Constituent Assembly……adopt, enact and give to India this constitution c) We, the people of India…………..in our Constituent Assembly……….adopt, enact and give to ourselves this constitution
How many meaningful English words can be made from the letters EOPR, using each letter only once?
what is aql