In the reaction 2FeCl₃ + H₂S → 2FeCl₂ + 2HCl + S, the reducing agent is:
A. HCl
B. FeCl₃
C. H₂S
D. FeCl₂
Answer: Option C
Solution (By JKExamLibrary)
H₂S is oxidized (S²⁻ → S, loss of electrons), so it acts as the reducing agent. FeCl₃ is reduced (Fe³⁺ → Fe²⁺) and acts as oxidizing agent. The substance oxidized is the reducing agent.
Explanation:
Silver bromide decomposes into silver and bromine on exposure to light. This is a photochemical decomposition reaction, where a single compound breaks down into two or more simpler substances. It is also a redox reaction (Ag⁺ reduced, Br⁻ oxidized). Photographic films use this property. Combination would be A + B → AB. Displacement is A + BC → AC + B. Neutralization is acid + base → salt + water.
Explanation:
Liquefied Petroleum Gas (LPG) consists primarily of propane (C₃H₈) and butane (C₄H₁₀) liquefied under pressure. A strong-smelling mercaptan is added as odorant to detect leaks. CNG is mainly methane. LPG is used for cooking and as automotive fuel (autogas). It has higher calorific value than natural gas. It is heavier than air, so it settles in low areas, posing a safety hazard if leaked.
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