Identify the olfactory indicators from the given options.

Q. Identify the incorrect statements from the following.
a) Acids are bitter whereas bases are sour in taste.
b) Baking soda, tomatoes and grapes contain organic acids.
c) Acids and bases can be identified using turmeric, methyl orange and litmus solution.
d) Olfactory indicators change colours in acidic or basic solutions.

Q. Olfactory indicator help to identify whether the given solution is acidic or basic by changing:

Q. What is an olfactory indicator? Name two olfactory indicators. What is the effect of adding sodium hydroxide solution to these olfactory indicators?

Q. For the statements given below, choose the correct option.
A. Olfactory indicators can be natural indicators.
B. All visual indicators are natural indicators.

Q. Alex had two solutions: X and Y. He added a few drops of turmeric water in solution X and observed that the solution X turned yellow in colour. On adding turmeric water to solution Y, he observed that the solution turned red in colour. From the options given below, identify the solutions that match Alex’s observations.