Question

Match the LIST-I with LIST-II

Match List-I with List-II.

List-I		List-II
(A)	Whiting	(I)	\(\mathrm{Li_2CO_3}\)
(B)	Red Lead	(II)	\(\mathrm{CaCO_3}\)
(C)	Lithium Carbonate	(III)	\(\mathrm{2PbCO_3}\)
(D)	White Lead	(IV)	\(\mathrm{Pb_3O_4}\)

• A. A-I, B-II, C-IV, D-III
• B. A-II, B-I, C-III, D-IV
• C. A-II, B-IV, C-I, D-III
• D. A-IV, B-I, C-II, D-III

Hint:

Logic Tip: Whiting = Calcium Carbonate ($CaCO_3$). Lithium Carbonate = $Li_2CO_3$. Matching just these two common fluxes reveals the correct option.

Answer 1

The Correct Option is C

Concept:
Ceramic raw materials are often referred to by their common industrial names rather than their strict chemical formulas. Knowing the chemical translation is crucial for glaze calculation.

Step 1:
Whiting is the common name for crushed limestone or chalk. Its chemical name is Calcium Carbonate. The formula is $CaCO_3$. (A-II)

Step 2:
Red lead is a highly toxic, powerful low-fire flux. It is a mixed oxide of lead, chemically known as Lead(II,IV) oxide. Its formula is $Pb_3O_4$. (B-IV)

Step 3:
Lithium Carbonate is an alkaline flux used to lower melting temperatures and promote crystallization. Its formula is simply $Li_2CO_3$. (C-I)

Step 4:
White lead is basic lead carbonate. In older ceramic texts and simplified chemistry, it is often represented as $2PbCO_3$ (or more accurately $2PbCO_3 \cdot Pb(OH)_2$). (D-III)

Step 5:
Matching these gives A-II, B-IV, C-I, D-III, which corresponds to Option 3. \[ \boxed{\text{(3) A-II, B-IV, C-I, D-III}} \]