MEDIUM
10th ICSE
IMPORTANT
Earn 100

Salt is produced by the reaction between an acid and a base. Identify the acid and the base from which NaCl salts have been formed.

Important Questions on Acids, Bases and Salts

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 14
Consider the following salts Na2SO4,NH4Cl,KNO3,NaCl. Which of the salt has a pH less than 7. Why?
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 1

What happens when a solution of an acid is mixed with a solution of a base in a test tube? 

 (i) The temperature of the solution increases

 (Iii) The temperature of the solution decreases

 (iii) The temperature of the solution remains the same

(iv) Salt formation takes place

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 2
 An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 3
During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to: 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 4
Which of the following salts does not contain water of crystallisation?
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 5
Sodium carbonate is a basic salt because it is a salt of: 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 6
Calcium phosphate is present in tooth enamel. Its nature is:
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 7
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?