EXERCISE
Geetha Iyer Science Solutions for EXERCISE
Simple step-by-step solutions to EXERCISE questions of Acids, Bases and Salts from Science Now 7. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from EXERCISE with Hints & Solutions
Blue litmus paper dipped in an unknown solution remains blue because it is
The of distilled water is neither acidic nor basic.
The substances that cause orange, curd and tamarind to have a sour taste.
The substances that cause soaps to have a slippery feel and bitter taste.
The substances that are neither acidic nor basic.
The common name of calcium carbonate. (Quick lime/ Limestone)
You are given two test tubes, one of which contains an acidic solution and the other contains a basic solution. If you are given only blue litmus paper, how will you identify the unknown contents of each test tube? Do not taste the contents of any of the test tubes! (Hint: Recall the litmus test).
You are given an unknown salt. How will you identify the nature of that salt, that is whether it is acidic, basic or neutral? (Hint: Recall the pH test).
