MCQ questions for class 10 Science Chapter 2 Acids, Bases, and Salts
Question 1: What is the chemical formula for hydrochloric acid?
HCl
H2CO3
HNO3
H2SO4
Question 2: Which of the following is a strong acid?
Acetic acid (CH3COOH)
Citric acid (C6H8O7)
Hydrochloric acid (HCl)
Formic acid (HCOOH)
Question 3: What is the product of the reaction between hydrochloric acid and sodium hydroxide?
Water
Salt
Hydrogen gas
Oxygen gas
Question 4: Which of the following is a weak base?
Sodium hydroxide (NaOH)
Ammonium hydroxide (NH4OH)
Potassium hydroxide (KOH)
Calcium hydroxide (Ca(OH)2)
Question 5: What is the pH value of a neutral solution?
0
7
14
10
Question 6: Which of the following is a strong base?
Sodium hydroxide (NaOH)
Ammonium hydroxide (NH4OH)
Potassium hydroxide (KOH)
Calcium hydroxide (Ca(OH)2)
Question 7: What happens when an acid reacts with a metal carbonate?
Evolution of gas
Change in color
Formation of a precipitate
No observable change
Question 8: Which gas is evolved when hydrochloric acid reacts with calcium carbonate?
O2
CO2
H2
N2
Question 9: What is the chemical formula for sulfuric acid?
H2SO3
H2SO4
HSO3
HSO4
Question 10: Which of the following is an example of a base?
Lemon juice
Vinegar
Baking soda
Ammonia
Question 11: What is the chemical formula for nitric acid?
HNO2
HNO3
HNO4
HNO
Question 12: Which of the following is a strong acid?
Acetic acid (CH3COOH)
Citric acid (C6H8O7)
Hydrochloric acid (HCl)
Formic acid (HCOOH)
Question 13: What is the product of the reaction between sulfuric acid and zinc?
Water
Salt
Hydrogen gas
Oxygen gas
Question 14: Which of the following is a characteristic of bases?
Turns blue litmus paper red
Tastes sour
Bitter taste
Does not react with metals
Question 15: What is the chemical formula for acetic acid?
HCl
HNO3
CH3COOH
H2SO4
Question 16: Which of the following is an example of a strong base?
Sodium hydroxide (NaOH)
Ammonium hydroxide (NH4OH)
Potassium hydroxide (KOH)
Calcium hydroxide (Ca(OH)2)
Question 17: What is the product of the reaction between hydrochloric acid and sodium carbonate?
Water
Salt
Hydrogen gas
Oxygen gas
Question 19: What is the chemical formula for phosphoric acid?
H3PO2
H3PO3
H3PO4
H3PO
Question 20: Which of the following is a weak acid?
Hydrochloric acid (HCl)
Sulfuric acid (H2SO4)
Acetic acid (CH3COOH)
Nitric acid (HNO3)
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