Match List-I with List-II and select the correct answer using the code given below the Lists : List-I (Material) A. Cement B. Glass C. Ink D. Soap List-II (Important Ingredient) 1. Sodium salt of fatty acids 2. Carbon black 3. Silica in the form of quartz 4. Aluminates and silicates of calcium Codes : A B C D

The matching of materials to their ingredients is as follows: (A) Cement is primarily composed of aluminates and silicates of calcium, specifically tricalcium silicate and tricalcium aluminate, which react with water to form a durable mass [t2][t6][t8]. (B) Glass is manufactured using silica (silicon dioxide), often sourced from quartz sand or crushed quartz [t6]. (C) Ink, particularly black printing ink, utilizes carbon black as a primary pigment for its deep black color and opacity. (D) Soap consists of sodium or potassium salts of long-chain fatty acids (carboxylic acids), such as sodium stearate, produced through the saponification of fats with an alkali like sodium hydroxide [c2][c5][t1][t3]. Therefore, the correct sequence is A-4, B-3, C-2, D-1, which corresponds to Option 1.

Sources

1. [1] https://www.sciencedirect.com/topics/engineering/cement-composition
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 4: Carbon and its Compounds > CH COOH CH CH OH CH C C CH CH H O 3 3 2 3 2 3 2 Acid O (E - + - - - - - + thanoic acid) (Ethanol) (Ester) O > p. 73
3. [3] Science , class X (NCERT 2025 ed.) > Chapter 4: Carbon and its Compounds > Activity 4.10 > p. 75
4. [4] https://en.wikipedia.org/wiki/Surfactant