Source: Extra Practice
Which of the following describes a characteristic property of basic substances?
Options
Option A
They are sour in taste.
Option B is correct
They feel soapy to touch.
Option C
They turn blue litmus red.
Option D
They react with metals to produce hydrogen gas.
Explanation
Basic substances are typically bitter in taste and feel soapy or slippery to touch. Acids are sour in taste and turn blue litmus red. While some bases can react with certain metals, feeling soapy to touch is a more general and distinct characteristic mentioned for bases in Class 7 textbooks, along with their bitter taste.