The soil in a field is highly acidic. Name two materials which can be added to this soil to reduce its acidity. Give the reason for your choice.
Important Questions on Acid, Bases and Salts
Four solutions A, B, C, and D have pH 2, 6. 7, and 13 respectively:
Which of the above solutions is a strong acid?
State:
The difference between number of molecules in Gypsum and in Plaster of Paris.
A milkman adds a very small amount of baking soda to fresh milk.
Why does he shifts the pH of the fresh milk from 6 to slightly alkaline?
A teacher provided acetic acid, water, lemon juice, an aqueous solution of sodium hydrogen carbonate and sodium hydroxide to students in the school laboratory to determine the pH values of these substances using pH papers. One of the students reported the pH values of the given substances as and respectively. Which one of these values is not correct? Write its correct value stating the reason.
Answer the following:
On what does the strength of base depend?
What is the pH scale? The pH value of fresh milk is . What would be the change in pH after its conversion into curd?
A milkman adds a very small amount of baking soda to fresh milk.
Why does this milk take a long time to set as curd?
