What is the correct meaning of a downward arrow in a chemical equation?
Answer and explanation
Correct answer: Formation of precipitate
A downward arrow (↓) in a chemical equation shows that an insoluble solid has formed from the reacting solutions. This solid settles out and is called a precipitate; for example, silver chloride may form as a precipitate in a reaction involving soluble silver and chloride compounds. An upward arrow represents gas evolution, whereas combustion and light emission require different descriptions. Thus, option B is correct.
Frequently asked questions
What is the correct answer to this question?
Formation of precipitate
Why is this the correct answer?
A downward arrow (↓) in a chemical equation shows that an insoluble solid has formed from the reacting solutions. This solid settles out and is called a precipitate; for example, silver chloride may form as a precipitate in a reaction involving soluble silver and chloride compounds. An upward arrow represents gas evolution, whereas combustion and light emission require different descriptions. Thus, option B is correct.
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.
