EASY
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What is the pH of a neutral solution?

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Important Questions on Acid, Bases and Salts

EASY
A solution turns red litmus blue. Its pH is likely to be
EASY
A solution turns red litmus blue, its pH is likely to be:
MEDIUM
Define a pH scale. Write its two uses.
EASY
You have three solutions A, B and C whose pH is 4, 7 and 10 respectively. Out of the above solutions, which solution is acidic?
MEDIUM
Which substance is not used as a remedy of acidity?
EASY
A solution turns red litmus blue, its pH is likely to be 
EASY
What is the pH value of the neutral solution? (write in digit)
MEDIUM

What is the pH scale? The pH value of fresh milk is 6. What would be the change in pH after its conversion into curd?

MEDIUM
The aqueous solution having pH 2 is how many times more acidic than aqueous solution having pH 4?
MEDIUM

State:

The difference between number of molecules in Gypsum and in Plaster of Paris.

MEDIUM

When pH paper is dipped in solution its colour gets changed. In the following table colour of pH, paper is shown in Section A and pH values in section B. Select the correct answer.

Section A Section B
1) Pink a) 7
2) Light green b) 2
3) Green  c) 10
4) Blue d) 8
MEDIUM
Which statement is wrong regarding the pH scale?
MEDIUM
Calculate the pOH of 0.007 M aqueous solution of NaOH. (log7 = 0.8451)
MEDIUM

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 3, 12, 4, 8 and 14 respectively. Which one of these values is not correct? Write its correct value stating the reason.

HARD
What is a strong acid? Explain how tooth decay is caused. How can it be prevented?
EASY

Four solutions A, B, C, and D have pH 2, 6. 7, and 13 respectively:

Which of the above solutions is a strong acid?

EASY

Answer the following:

On what does the strength of base depend?