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In which of the given chemical …

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In which of the given chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature? A) 2H₂ (l) + O₂ (l) → 2H₂O (g) B) 2H₂ (g) + O₂ (l) → 2H₂O (g) C) 2H₂ (g) + O₂ (g) → 2H₂O (l) D) 2H₂ (g) + O₂ (g) → 2H₂O (g) An element X on exposure to moist air turns reddish-brown and a new compound Y is formed. The substances X and Y are A) X = Fe, Y = Fe₂O₃ B) X = Ag, Y = Ag₂S C) X = Cu, Y = CuO D) X = Al, Y = Al₂O₃ In which of the given, heat energy will be evolved? A) Electrolysis of water B) Dissolution of NH₄Cl in water C) Burning of L.P.G. D) Decomposition of AgBr in the presence of sunlight A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple color of the solution fades and finally disappears. Which of the given equation is the correct explanation for the observation? A) KMnO₄ is an oxidizing agent, it oxidizes FeSO₄ B) FeSO₄ acts as an oxidizing agent and oxidizes KMnO₄ C) The color disappears due to dilution, no reaction is involved D) KMnO₄ is an unstable compound and decomposes in the presence of FeSO₄ to a colourless compound
  • 3 answers

Sahil Anwar 4 years, 3 months ago

Thanks brother ?

Adithya Dev A 4 years, 3 months ago

A) Option - c. B) Option - a. C) Option - c. D) Option - a.

Mamta ... 4 years, 3 months ago

The question is very confusing Sahil??
http://mycbseguide.com/examin8/

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