6. Which one of the following metals does not react with cold as well as hot water?
A. Na
B. Ca
C. Mg
D. Fe
7. Which of the following oxide (s) of iron would be obtained on prolor ged reaction of iron with
steam?
A. Feo
B. Fe2O3
C. Fe3O4
D. Fe2O3 and Fe3O4
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Answer:
6th d
7th c
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