Question

Match List-1 (Admixtures) with List-2 (Chemicals) and select the correct answer using the options given below :

List-1	list-2
P. Water-reducing admixture	1. Sulphonated melanin formaldehyde
Q. Air-entraining agent	2. Calcium chloride
R. Super plasticizer	3. Leignosulphonate
S. Accelerator	4. Neutralized vinsol resin

• A. P-2, Q-4, R-1, S-3
• B. P-1, Q-3, R-4, S-2
• C. P-3, Q-4, R-1, S-2
• D. P-3, Q-4, R-2, S-1

Answer 1

The correct option is C P-3, Q-4, R-1, S-2

$\bullet$ Accelerator $\to CaC{l}_2$ (Calcium Chloride)

$\bullet$ Super plasticizers $\to$ Sulphonated melanin, formaldehyde (It increases strength)

$\bullet$ Water reducer $\to$ Leignosulphonate (It increases strength as the water content is reduced)

$\bullet$ Air entrainment $\to$ Neutralized Vinsol resin. It improves workability, durability & plasticity but reduces strength.