Class 8 General Science Notes: - Unit-7- Acid, Base and Salt ( Solved Exercise MCQs)

Unit-7- Acid, Base and Salt ( Solved Exercise MCQs)

(National Book Foundation - New Book/New Syllabus Based on National Curriculum Pakistan 2023-2024 and Onwards)

(Class 8 General Science Notes for 8th Centralized Exam 2023-2024 and onward, FDE, Islamabad)

A. MCQs (Choose the Correct Answers).

1. Which of the following pH values denotes acid?

a. 11
b. 8
c. 3
d. 7

... Answer is c. 3
--------------

2. Which acid is present in vinegar?

a. HCI
b. HNO₃
c. CH₃COOH
d. H₂CO₃

... Answer is c. CH₃COOH
-----------------

3. A solution is strongly acidic if its pH is:

a. greater than 7
b. 7
c. 1
d. 14

... Answer is c.  1
-----------------

4. When dissolved in water, acids give?

a. H
b. OH
c. N₂
d. Na⁺

... Answer is a.  H
---------------

5. Which of the following is not an alkali?

a. KOH
b. NaOH
c. H₂CO₃
d. Ca(OH)₂

... Answer is c.  H₂CO₃
-----------------

6. Which of the following is salt?

a. NaOH
b. HCI
c. NaCl
d. HNO₃

... Answer is c.  NaCl
------------------

7. Which acid is used in car battery?

a. HCl
b. HNO₃
c. CH₃COOH
d. H₂SO₄

... Answer is d.  H₂SO₄
--------------------

8. When an ant or a bee stings you, it injects

a. an alkali.
b. an acid.
c. a salt.
d. water.

... Answer is b.  an acid.
---------------

9. Which of the following is NOT a mineral acid?

a. Hydrochloric acid
b. Sulphuric acid
c. Acetic acid
d. Nitric acid

... Answer is c.  Acetic acid
---------------

10. Acids react with carbonates to liberate

a. hydrogen.
b. oxygen.
c. carbon dioxide.
d. ammonia.

... Answer is c.  carbon dioxide.
----------------

************************************

Shortcut Links For:

1.  5th Class All Subjects Notes

2.  8th Class All Subjects Notes

1. Website for School and College Level Physics   

(https://askrarequiz.blogspot.com)

2. Website for School and College Level Mathematics  

(https://askraremaths.blogspot.com)

3. Website for Single National Curriculum Pakistan - All Subjects Notes 

(https://askrareclassnotes.blogspot.com/)

© 2023 & onwards Academic Skills and Knowledge (ASK)   

Note:  Write me in the comments box below for any query and also Share this information with your class-fellows and friends.