The brown gas formed when metal reduces HNO3 is:
Correct answer: C. NO2
- A. N2O5
- B. N2O3
- C. NO2
- D. NO
Explanation
The brown gas formed when HNO_3 is reduced by metal to form nitrogen dioxide which is a poisonous brown gas with an irritating odour.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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