Class 10 acid and bases ncert questions and answers
Here are some NCERT questions and answers for Class 10 on acids and bases:
Q1. What are acids and bases?
Ans. Acids are substances that produce hydrogen ions (H+) when dissolved in water, while bases are substances that produce hydroxide ions (OH-) when dissolved in water.
Q2. What is the pH scale?
Ans. The pH scale is a measure of the concentration of hydrogen ions in a solution. It ranges from 0 to 14, with 0 being the most acidic, 7 being neutral, and 14 being the most basic (alkaline).
Q3. What is the difference between acids and bases?
Ans. Acids donate hydrogen ions (H+) while bases accept hydrogen ions (H+). Acids taste sour, while bases taste bitter or soapy. Acids turn blue litmus paper red, while bases turn red litmus paper blue.
Q4. What are the properties of acids?
Ans. Acids have a sour taste, are corrosive, and react with metals to produce hydrogen gas. They turn blue litmus paper red, have a pH less than 7, and react with bases to form a salt and water.
Q5. What are the properties of bases?
Ans. Bases have a bitter or soapy taste, are corrosive, and do not react with metals. They turn red litmus paper blue, have a pH greater than 7, and react with acids to form a salt and water.
Q6. What is the reaction between an acid and a base called?
Ans. The reaction between an acid and a base is called a neutralization reaction.
Q7. What is the chemical formula for hydrochloric acid?
Ans. The chemical formula for hydrochloric acid is HCl.
Q8. What is the chemical formula for sulfuric acid?
Ans. The chemical formula for sulfuric acid is H2SO4.
Q9. What is the chemical formula for sodium hydroxide?
Ans. The chemical formula for sodium hydroxide is NaOH.
Q10. What is the chemical formula for calcium hydroxide?
Ans. The chemical formula for calcium hydroxide is Ca(OH)2.
