NCERT Class 10 Science Activity 2.11 Explanation

In this post, you will find NCERT Class 10 Science Activity 2.11 Explanation in detail. This activity is based on chapter 2 Acids, Bases and Salts of class 10 science.

NCERT Class 10 Science Activity 2.11 Explanation

 

 

Activity- Test the pH values of solutions given in the table ...

·      Record your observations.

·      What is the nature of each substance on the basis of your observation?

Table

S. No.	Solution	Colour of pH paper	Approximate pH value	Nature of substance
1 2 3 4 5 6 7 8 9 10	Saliva (before meal) Saliva (after meal) Lemon juice Colourless aerated drink Carrot juice Coffee Tomato juice Tap water 1M NaOH 1M HCI

 

Observation and Conclusion:

S. No.	Solution	Approximate pH Value	Nature of substance
1 2 3 4 5 6 7 8 9 10	Saliva Lemon juice Colourless aerate  drink Carrot juice Coffee Tomato juice Tap water 1 M NaOH 1 M HCI	6.5 to 7.5 2.2 to 2.4 5.9 to 6.0 6.4 to 6.6 4.5  to 5.5 4.1 6.9 to 7 14 0	Neutral Acidic Acidic Acidic Acidic Acidic Neutral Basic Acidic

Related Topics -

1. Activity 2.12

2.  Activity 2.10

2. Solutions of Chapter 2 

3. MCQ Questions of Chapter 2

4. Extra Questions of Chapter 2