Thể tích dung dịch K₂Cr₂O₇ 1M cần dùng để phản ứng vừa đủ với 300 ml dung dịch FeSO₄ 2M (trong môi trường H₂SO₄ loãng dư) là

A. 600 ml

B. 300 ml

C. 100 ml

D. 200 ml

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

There are several different kinds of faults in reading which are usually more exaggerated with foreign learners. 

A. overemphasized

B. understated 

C. overestimated

D. undertaken