.1. Why limewater turns milky on passing carbon dioxide gas through it?
2 How can you prevent browning of cut apple?
3 How can you obtain salt from sea water?
4 Why do we paint iron grills?
5. What is crystallization?
Answers
Answer (✪ω✪)
1 . When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate. Lime reacts with acidic gases like sulfur dioxide.
2 . Here's the short version: The best way to prevent browning is to soak the cut fruit in a saltwater solution (half a teaspoon of kosher salt per cup of water) for 10 minutes, then drain and store until ready to use. The mild salt flavor can be rinsed off with tap water before serving.
3 . The sea water evaporates due to the sun's heat and solid salt is left behind. The left salt is collected and refined to get purified salt. Hence, salt is obtained from sea water by evaporation.
4 . To prevent rusting of iron substances, they are painted frequently. Iron is a reactive metal and it starts corroding in the presence of air (oxygen) and water (or moisture) . Therefore, an iron grill is painted frequently to prevent corrosion.
5 . Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas .
Hope it helps (✪ω✪)
Answer:
1.When carbon dioxide is passed through lime water, it turns milky due to the formation of calcium carbonate.
2.To use this method to prevent apples from turning brown, create a water bath for your apple slices with a ratio of 1 tablespoon of lemon juice to 1 cup of water. Soak the apple slices for 3 to 5 minutes, then drain and rinse them. This simple step should keep your apples from browning for several hours.
3.The sea water evaporates due to the sun's heat and solid salt is left behind. The left salt is collected and refined to get purified salt. Hence, salt is obtained from sea water by evaporation.
4.To prevent rusting of iron substances, they are painted frequently. Iron is a reactive metal and it starts corroding in the presence of air (oxygen) and water (or moisture). ... Therefore, an iron grill is painted frequently to prevent corrosion.
5.Crystallization is a process whereby solid crystals are formed from another phase, typically a liquid solution or melt. Crystal. Crystal is a solid particle in which the constituent molecules, atoms, or ions are arranged in some fixed and rigid, repeating three-dimensional pattern or lattice.
Explanation:
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