Question

(i) An element which reacts with alkali to produce hydrogen.
(ii) Substances responsible for green house effect.
(iii) Inert gas of third period.
(iv) A brown gas having pungent irritating odour and turns potassium iodide paper brown.
(v) Particle formed when hydrogen loses its electron.​

Answer 1

1. SILICON.

2. CARBON DIOXIDE

3. ARGON

4. WHEN BROUGHT NEAR HNO3 VAPOURS.

5. HYDROGEN ION

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