1.

Nidhi took two China dishes and marked them as I and II. In China dish I, she mixed iron filings and sulphur powder. In China dish II, she mixed iron filings and dilute hydrochloric acid. What were her observations in both the dishes?  

A. In China dish I, a mixture is formed, where iron filings and sulphur powder can be seen separately.
B. In China dish II, a new compound is formed, which is different from iron filings and dilute hydrochloric acid.
C. A colourless and odourless gas comes out from China dish II.
D. All the above observations are correct.
Answer» E.


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