If a downward arrow (↓) is shown next to a product in a chemical equation, what does it indicate?
Answer and explanation
Correct answer: Formation of a precipitate
A downward arrow (↓) in a chemical equation conventionally shows that an insoluble solid has formed from a solution and separated as a precipitate. For example, mixing suitable soluble salts can produce solid barium sulfate, written with a downward arrow. An upward arrow (↑) is commonly used for gas evolution, while heat and light require separate conditions or descriptions rather than this precipitation symbol.
Frequently asked questions
What is the correct answer to this question?
Formation of a precipitate
Why is this the correct answer?
A downward arrow (↓) in a chemical equation conventionally shows that an insoluble solid has formed from a solution and separated as a precipitate. For example, mixing suitable soluble salts can produce solid barium sulfate, written with a downward arrow. An upward arrow (↑) is commonly used for gas evolution, while heat and light require separate conditions or descriptions rather than this precipitation symbol.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
