Question

Sea water and river water are heated until they start boiling. Then which of the following options is correct
A. river water boils at lower temperature.
B. Sea water boils at lower temperature.
C. both boil at the same temperature.
D. cannot be said

Answer 1

Hint:Seas and rivers are extremely useful because they have a significant impact on the survival of flora and wildlife. They both support species that are very reliant on water. The presence of such fundamental materials shaped the early civilizations in terms of human life. These bodies of water have also played an important role in the advancement of commerce and geographic exploration.

Complete answer:
The boiling point of water is not lowered by adding salt. In fact, the inverse is true. When you add salt to water, it causes a phenomenon known as boiling point elevation. The boiling point of water is raised somewhat, but not to the point where the temperature difference is noticeable. At 1 atmosphere of pressure, the boiling point of water is 100 degree Celsius (at sea level).

To raise the boiling point of a litre of water by half a degree Celsius, you'd need to add 58 grams of salt. In general, the amount of salt added to water for cooking has little effect on the boiling point.Salt is sodium chloride, an ionic substance that dissolves in water into its constituent ions. Ions floating in the water change the way molecules interact with one another. Salt isn't the only thing that has this impact.

Any chemical added to water (or any liquid) raises its boiling point.Seawater and river water are heated to the point where they begin to boil.Because sea water contains salt, the boiling point of sea water rises. The boiling point of river water is the same as the boiling point of water.River water boils at a lower temperature, as a result.

Therefore, the correct answer is option A.

Note: A substance's boiling point is the temperature at which the vapour pressure of a liquid equals the pressure around the liquid and the liquid transforms into a vapour. The boiling point of a liquid is affected by the surrounding atmospheric pressure. The boiling point of a liquid in a partial vacuum is lower than the boiling point of the same liquid at atmospheric pressure. The boiling point of a liquid at high pressure is greater than the boiling point of the same liquid at atmospheric pressure.