Free Notes for Class 5–12 | CBSE | 24x7 Access
Student School Teacher Help
Home Schools Pricing
Log in Get Started
Class 10 Science Medium Mcq English Medium

Dry HCl gas does not change the colour of dry litmus paper because

Question
Dry HCl gas does not change the colour of dry litmus paper because
It lacks free H+ ions in the absence of water
It is basic in nature
It has no chlorine present
It evaporates instantly
Answer
It lacks free H+ ions in the absence of water
Detailed Explanation
Hydrogen ions are produced from HCl only in the presence of water; dry HCl gas does not ionise.
Related Questions
Litmus, the natural indicator, is extracted from Science · Acids, Bases and Salts Turmeric, a natural indicator, turns which colour in the presence of a base Science · Acids, Bases and Salts Which of the following is a synthetic indicator Science · Acids, Bases and Salts Blue litmus paper turns which colour in an acid Science · Acids, Bases and Salts

Want the full Science question bank?

Log in for free to unlock practice tests, notes, and an AI tutor for Class 10.

Get started free