Which metal is the most reactive among the following?
A. Na
B. Zn
C. Fe
D. Cu
Answer: Option A
Solution (By JKExamLibrary)
Reactivity series order: Na > Zn > Fe > Cu. Sodium (alkali metal) is extremely reactive, reacting violently with water. Copper is low in the series, hence used for water pipes.
Explanation:
Copper pyrites, also known as chalcopyrite, is the most important and abundant ore of copper. Its chemical formula is CuFeS2. Bauxite is the ore of aluminum, cinnabar is the ore of mercury, and haematite is the primary ore of iron.
Explanation:
An ideal gas is a theoretical gas that perfectly obeys the ideal gas equation (PV=nRT) and all gas laws under all conditions. It assumes no intermolecular forces and zero molecular volume. Because of these assumptions, an ideal gas cannot be liquefied, unlike real gases which deviate at high pressures.
Explanation:
The Haber process synthesizes ammonia from nitrogen and hydrogen (N₂ + 3H₂ ⇌ 2NH₃). Finely divided iron acts as the catalyst, often with molybdenum as a promoter, to increase the rate of reaction at high pressure and moderate temperature. V₂O₅ is used in the Contact process.
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