MCQ Questions | Class 10 Science Chapter 2 | Acids, Bases and Salts with Answers

MCQ | Class 10 Science Chapter 2 | Acids, Bases and Salts Set B

Check the below NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers Pdf free download. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. We have Provided Acids, Bases and Salts Class 10 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | Science Class 10 Chapter 2

NCERT Solutions Class 10 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	10th
Subject:	Science
Chapter:	2
Chapters Name:	Acids, Bases and Salts
Medium:	English

Class 10th Science Book | Objective Type Questions

You can refer to NCERT Solutions for Class 10 Science Chapter 2 Acids, Bases and Salts to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Acids, Bases and Salts | Class 10 Science | NCERT Solutions

Q1.	When hydrogen chloride gas is prepared 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
	A. absorb the evolved gas
	B. moisten the gas
	C. absorb moisture from the gas
	D. absorb Cl^– ions from the evolved gas

Ans: absorb moisture from the gas

Q2.	Plaster of Paris is made from
	A. Lime stone
	B. Slaked Lime
	C. Quick lime
	D. Gypsum

Ans: Gypsum

Q3.	Assertion: Bleaching power liberate chlorine when kept in atmosphere. Reason: CaOCl₂ reacts with CO₂ present in atmosphere to form CaCO₃ and chlorine gas.
	A. Both A and R are true and R is the correct explanation of A.
	B. Both A and R are true but R is not the correct explanation of A.
	C. A is true but R is false.
	D. A is false but R is true.

Ans: Both A and R are true and R is the correct explanation of A.

Q4.	Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH2OH
	A. Both A and R are true and R is the correct explanation of A.
	B. Both A and R are true but R is not the correct explanation of A.
	C. A is true but R is false.
	D. A is false but R is true.

Ans: Both A and R are true but R is not the correct explanation of A.

Q5.	Ag₂S reacts with H₂SO₄ to form
	A. AgSO₄
	B. Ag₂SO₄ + H₂S
	C. Ag₂O + H₂S
	D. AgOH + H₂S

Ans: Ag₂SO₄ + H₂S

Q6.	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?
	A. Lemon juice
	B. Vinegar
	C. Common salt
	D. An antacid

Ans: An antacid

Q7.	Which of the following salts does not contain water of crystallisation?
	A. Blue vitriol
	B. Baking soda
	C. Washing soda
	D. Gypsum

Ans: Baking soda

Q8.	How many water molecules does hydrated calcium sulphate contain?
	A. 5
	B. 10
	C. 7
	D. 2

Ans: 2

Q9.	10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of same solution of NaOH, the amount of HCl solution required to neutralize it will be
	A. 4 mL
	B. 8 mL
	C. 12 mL
	D. 16 mL

Ans: 16 mL

Q10.	An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
	A. Baking powder
	B. Lime
	C. Ammonium hydroxide solution
	D. Hydrochloric acid

Ans: Hydrochloric acid

Q11.	Sodium hydroxide is used
	A. as an antacid
	B. in manufacture of soap
	C. as a cleansing agent
	D. in alkaline batteries

Ans: in manufacture of soap

Q12.	A solution reacts with crushed egg-shells to give a gas that turns lime-water milkey. The solution contains
	A. NaCl
	B. HCl
	C. LiCl
	D. KCl

Ans: HCl

Q13.	When copper oxide and dilute hydrochloric acid react, colour changes to
	A. white
	B. bluish-green
	C. blue-black
	D. black

Ans: bluish-green

Q14.	If pH of solution is 13, it means that if is
	A. Weakly acidic
	B. Weakly basic
	C. Strongly acidic
	D. Strongly Basic

Ans: Strongly Basic

Q15.	Nettle sting is a natural source of which acid?
	A. Metiwanoic acid
	B. Lactic acid
	C. Citric acid
	D. Tartaric acid

Ans: Metiwanoic acid

Q16.	Alkalis are
	A. acids, which are soluble in water
	B. acids, which are insoluble in water
	C. bases, which are insoluble in water
	D. bases, which are soluble in water

Ans: bases, which are soluble in water

Q17.	Plaster of Paris hardens by
	A. Giving off CO₂
	B. Changing into
	C. Combining with water CaCO₃
	D. Giving out water

Ans: Combining with water

Q18.	The odour of acetic acid resembles that of
	A. Rose
	B. Burning Plastic
	C. Vinegar
	D. Kerosene

Ans: Vinegar

Q19.	The H⁺ ion concentration of a solution is 1.0×10^-5m. The solution is
	A. Acidic
	B. Alkaline
	C. Neutral
	D. Amphoteric

Ans: Acidic

Q20.	In terms of acidic strength, which one of the following is in the correct increasing order?
	A. Water < Acetic acid < Hydrochloric acid
	B. Water < Hydrochloric acid < Acetic acid
	C. Acetic acid < Water < Hydrochloric acid
	D. Hydrochloric acid < Water < Acetic acid