Acid-Base Indicators
Acid-Base Indicators: Overview
This topic covers concepts, such as, Acid-Base Indicators, Litmus, Effect of Acids and Bases on Olfactory Indicators & Some Naturally Occuring Acids etc.
Important Questions on Acid-Base Indicators
Define olfactory indicator. Give two examples of it.
Which of the following indicators is an olfactory indicator?
When moist litmus paper is placed in a test tube of this gas, it turns red.
A diatomic gas that turns moist litmus paper from blue to red. (chlorine/hydrogen)
A gas which turns moist red litmus paper blue.
What is the effect of dilute hydrochloric acid on the colour of the red litmus indicator?
What is the effect of dilute hydrochloric acid on the colour of the blue litmus indicator:
The sense of smell is detected by the _____ receptors.
The colour of methyl orange indicator in acidic medium is
Which of the following is not a naturally occuring indicator?
Indigo Carmine is a pH indicator that changes from blue to yellow for bases.
Methyl orange as pH indicator turns to _____ colour for bases.
In acidic conditions, blue litmus turns to red in colour.
What will be the colour of litmus in an aqueous solution of ammonium chloride salt?
