From the list of salts — AgCl, MgCl₂, NaHSO₄, PbCO₃
Choose the salt that most appropriately fits the description given below :
An insoluble chloride.

From — SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O — Select an oxide which dissolves in water forming an acid.

Match the following salts given below:

(i) Pb(NO₃)₂ from PbO

(ii) MgCl₂ from Mg

(iii) FeCl₃ from Fe

(iv) NaNO₃ from NaOH

(v) ZnCO₃ from ZnSO₄

With their correct method of preparation from: A, B, C, D and E.

(A) Simple displacement

(B) Titration

(C) Neutralization

(D) Precipitation

(E) Combination

Fill in the blanks from the choices given in brackets —

When a metallic oxide is dissolved in water, the solution formed has a high concentration of …………… ions. [H⁺, H₃O⁺, OH^-]