Water can dissolve more substances than any other liquid because

1. The question asks why water is such an excellent solvent, capable of dissolving more substances than any other liquid (often called the 'universal solvent'). 2. Option (A) states that water (H2O) is dipolar in nature. This is correct. The oxygen atom in a water molecule is more electronegative than the hydrogen atoms, leading to an uneven distribution of electron density. This creates a partial negative charge (δ-) near the oxygen atom and partial positive charges (δ+) near the hydrogen atoms. This polarity allows water molecules to surround and stabilize ions and other polar molecules, effectively dissolving them through electrostatic interactions and hydrogen bonding. 3. Option (B) states it is a good conductor of heat. While water has relatively good thermal conductivity compared to some liquids, this property is not the primary reason for its excellent solvent capabilities. 4. Option (C) states it has high value of specific heat. Water's high specific heat capacity is important for temperature regulation but does not directly explain its ability to dissolve many substances. 5. Option (D) states it is an oxide of hydrogen. While chemically true, simply being an oxide of hydrogen doesn't explain its solvent properties; the molecular structure and resulting polarity are key. Therefore, the dipolar nature of the water molecule is the fundamental reason for its exceptional ability to dissolve a wide range of substances.