Which of the following salts does not contain water of crystallization? MCQ with Answer and Explanation

Explanation:
Lattice energy is the energy required to separate one mole of an ionic solid into its gaseous ions. According to Coulomb's law, it is directly proportional to the product of the ionic charges and inversely proportional to the sum of their radii. Thus, higher charges and smaller sizes both increase lattice energy.

Explanation:
AgNO₃ + NaCl → AgCl↓ + NaNO₃ is a double displacement (precipitation) reaction where ions exchange partners. Ag⁺ pairs with Cl⁻ to form a white precipitate of AgCl, and Na⁺ remains with NO₃⁻. Option A is combination, B is single displacement, D is decomposition. Double displacement generally forms a precipitate, gas, or water. Neutralization is also a double displacement: HCl + NaOH → NaCl + H₂O.

Explanation:
Bronze is an alloy primarily of copper and tin, sometimes with other elements. Brass is Cu-Zn. Steel is Fe-C. Duralumin is Al-Cu-Mg-Mn. Bronze is used for statues, coins, and bearings.