Activity 2.12 NCERT Class 10 Science, Acids, Bases and Salts
Activity 2.12 asks us to collect a soil sample dilute it and check the filtrate with PH paper
Science class 10
Activity 2.11 NCERT Class 10 Science, Acids, Bases and Salts
The PH of various substances.
Activity 2.10 NCERT Class 10 Science, Acids, Bases and Salts
Dilution of acid is exothermic.
Activity 2.9 NCERT Class 10 Science, Acids, Bases and Salts
Activity 2.9 asks us to react solid sodium chloride with concentrated sulphuric acid and check if the gas evolved turn the red litmus paper into the blue.