An element which reacts with alkali to produce Hydrogen.
II. An alkaline earth metal.
III. A reaction in which Oxygen combines with another substance either wholly or in part.
IV. Inert gas in first period.
V. A brown gas having pungent irritating odour and turns Potassium Iodide paper brown.
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Answer:
1. SILICON.
2. CARBON DIOXIDE
3. ARGON
4. WHEN BROUGHT NEAR HNO3 VAPOURS.
5. HYDROGEN ION
PLSS MARK AS BRAINLIST PLSS
Explanation:
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