NEET Chemistry: Analytical Chemistry questions with solutions

Q1. The indicator used in iodometric titrations is

1. Phenolphthalein
2. Litmus
3. Potassium iodide
4. starch

Answer: starch

Starch is used because it forms an intense blue complex with iodine, making even tiny amounts of iodine easy to detect near the endpoint. This sharp color change is ideal for iodometric titrations.