Question

1) Answer the following questions correctly or get reported.
• Why is yellow food stain washed with soap?

2) Figure out the odd one from the group and write the reason.
• Sodium Hydroxide, Calcium Hydroxide, Ammonium Hydroxide, Potassium Hydroxide.
• Phenolphthalein, Methyl orange, Turmeric paper, Salt
• Plaster of Paris, Chalk, Lactic acid, Baking soda.
Write only answers*​

Answer 1

Answer:

Bases turn turmeric red. Hence, when soap (which is basic in nature) is scrubbed on the stain, the stain turns red. When the cloth is washed with plenty of water, the soap is removed and the yellow colour of the stain reappears.