Glass is a: MCQ with Answer and Explanation

Explanation:
Combined gas law combines Boyle's, Charles', and Gay-Lussac's laws for a fixed mass of gas. It relates P, V, T when all change. PV=nRT is ideal gas equation for n moles.

Explanation:
C₄H₁₀ is butane (n-butane or isobutane). Methane (CH₄), ethane (C₂H₆), propane (C₃H₈). It is used as LPG component.

Explanation:
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.