JEE Main levelSingle correct optionDifficulty 2 of 3ev190
Match the green chemistry principle in Column I with an example in Column II.
Column I: P. Atom economy; Q. Safer solvents; R. Catalysis; S. Design for degradation.
Column II: 1. Addition reactions in which all reactant atoms enter the product; 2. Liquid carbon dioxide in dry cleaning; 3. Catalytic hydrogenation instead of a stoichiometric metal reductant; 4. Biodegradable surfactants in detergents.
AP-1, Q-2, R-3, S-4
BP-2, Q-1, R-3, S-4
CP-1, Q-2, R-4, S-3
DP-3, Q-2, R-1, S-4
Answer: A
Atom economy is shown by additions (1). Replacing tetrachloroethene by liquid CO2 is a safer solvent (2). Catalytic hydrogenation is catalysis (3). Biodegradable surfactants break down after use, which is design for degradation (4).