MEDIUM
10th Gujarat Board
IMPORTANT
Earn 100

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

50% studentsanswered this correctly

Important Questions on Acids, Bases and Salts

MEDIUM
10th Gujarat Board
IMPORTANT
Calculate the pOH of 0.007 M aqueous solution of NaOH. (log7 = 0.8451)
MEDIUM
10th Gujarat Board
IMPORTANT

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?

EASY
10th Gujarat Board
IMPORTANT

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?

HARD
10th Gujarat Board
IMPORTANT
What is the chemical formula of sodium zincate? 
MEDIUM
10th Gujarat Board
IMPORTANT
Name the chemical compound commonly used by your mother in the kitchen for making tasty crisp pakoras or cake. State its chemical formula and write the chemical equation of its production.
EASY
10th Gujarat Board
IMPORTANT

Vankarbhaibhas explained the definition of an acid and a base, given by Robert Boyle in the classroom. Then the students of the classroom gave some suggestions regarding acid and base. Which suggestion is wrong among these?

Prashant: Acids are sour in taste and bases are bitter.

Dhruvi: Acid does not give any effect on wet blue litmus paper while base turns blue litmus paper blue.

Seil: Acid liberates dry hydrogen gas (H2) by the reaction with the metal. The base does not react with all metals.

Jaydeep: By neutralisation reaction between acid and base, salt and water is produced.

 

 

MEDIUM
10th Gujarat Board
IMPORTANT
What is neutralisation process? Explain with a chemical equation.