Here is Question No. 1 a part of our series on UPSC Prelims 2021.
Q1. Water can dissolve more substances than any other liquid because
a) it is dipolar in nature
b) it is a good conductor of heat
c) it has a high value of specific heat
d) it is an oxide of hydrogen
Answer: (a)
- Because it can dissolve more things than any other liquid, water is known as the “universal solvent”. Each and every living thing on the planet needs this. It implies that water transports valuable chemicals, minerals, and nutrients wherever it goes, whether through the air, the earth, or our bodies.
- The chemical makeup and physical characteristics of water are what make it such a good solvent. Oxygen and hydrogen atoms are arranged polarly in water molecules, with hydrogen having a positive electrical charge and oxygen having a negative charge. This makes it possible for the water molecule to attract a wide range of other molecular species.
- Water can develop a strong attraction to another substance, such as salt (NaCl), to the point where it can interfere with the attractive forces holding the sodium and chloride in the salt complex together and dissolve it.
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