Which of the following is an electrovalent compound?
A. KCl
B. CO₂
C. CH₄
D. CCl₄
Answer: Option A
Solution (By JKExamLibrary)
KCl (potassium chloride) is an ionic (electrovalent) compound formed by transfer of one electron from K to Cl, giving K⁺ and Cl⁻ ions held by electrostatic attraction. CH₄, CCl₄, CO₂ are covalent compounds with electron sharing. Electrovalent compounds have high melting points, conduct electricity in molten/aqueous state, and are generally soluble in water.
Explanation:
Liquefied Petroleum Gas (LPG) primarily consists of butane (C₄H₁₀) and isobutane, with some propane. For domestic use, it is often a mix of butane and propane. Methane is the main component of CNG and natural gas, which require different storage pressures and infrastructure.
Explanation:
Ozone (O₃) has one coordinate bond; a central oxygen donates a lone pair to another oxygen. CH₄, NH₃, H₂O have ordinary covalent bonds, though NH₃ can donate a pair to form NH₄⁺.
Explanation:
Aluminium is highly reactive; its oxide cannot be reduced by carbon. Hall-Héroult process electrolyzes alumina dissolved in molten cryolite (Na₃AlF₆) using carbon anodes.
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