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Chemistry CBSE Live product
Class 8 (2025-26)
Nature of matter: Elements, compounds and mixtures
Revision V - Nature of matter: Elements, compounds and mixtures
7.
Iron, sulphur and iron sulphide
Question:
4
m.
Answer the following given below:
Analyse the figure. Identify Gas A. Also, write the word equation of the chemical reaction.
i. Word equation -
Hydrochloric Acid + Iron filing → Iron Chloride + Hydrogen
Hydrochloric Acid + Iron filing → Iron Chloride + Hydroxide
Hydrochloric Acid + Iron filing → Iron Chloride + Hydrogen sulphide
Hydrochloric Acid + Iron filing → Iron Chloride + Oxygen
ii. Chemical formula equation -
\(2HCl + FeS → FeCl2 + H2S\)
\(2HCl + Fe → FeCl2 + H2O\)
\(2HCl + Fe → FeCl2 + H2\)
\(2HCl + Fe → FeCl2 + O2\)
iii.
Gas A
-
Hydrogen gas
Hydrogen sulphide gas
Hydoxide gas
Oxygen gas
iv. Conformation test -
Glowing splinter burns brightly
Rotten egg odour
Lime water turns milky
Burning splinter will produce a pop sound
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