Physics · Chemical Reactions and Equations
When an aqueous solution of lead nitrate is mixed with an aqueous solution of potassium iodide in a test tube, which of the following visual changes indicates that a chemical reaction has occurred?
- 1Brisk effervescence appears
- 2A popping sound is produced
- 3A yellow precipitate is formed✓
- 4A brown gas is evolved
Correct answer
A yellow precipitate is formed
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Physics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Chemical Reactions and Equations?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Physics · Chemical Reactions and Equations