Boolean Algebra Class 9 MCQ is one of the best strategies to prepare for the CBSE Class 9 Board exam. If you want to complete a grasp concept or work on one’s score, there is no method except constant practice. Students can improve their speed and accuracy by doing more Boolean Algebra class 9 MCQ which will help them all through their board test.

## Boolean Algebra Class 9 MCQ Questions with Answer

Class 9 Computer Science MCQ with answers are given here to Chapter 6 Boolean Algebra. These MCQs are based on the latest CBSE board syllabus and relate to the latest Class 9 Computer Science syllabus. By Solving these Class 9 MCQs, you will be able to analyze all of the concepts quickly in the Chapter and get ready for the Class 9 Annual exam.

Learn Boolean Algebra Class 9 MCQ with answers pdf free download according to the latest CBSE and NCERT syllabus. Students should prepare for the examination by solving CBSE Class 9 Boolean Algebra MCQ with answers given below.

**Question 1. A+0 is equal to————————–**

(a).A

(b).0

(c).A0

(d).0A

**Answer**

A

**Question 2. 0 is called the ————————–**

(a).no identity

(b).multiplication identity

(c). Division identity

(d).additive identity

**Answer**

D

**Question 3. Demorgan‟s law states that**

(a).a(b+c)=a.b+a.c

(b).a+(b+c)=(a+b)+c

(c). a b a.b

(d).none of the above

**Answer**

C

**Question 4. A Boolean function with four variables will have——–**

(a).8 maxterms

(b). 16 maxterms

(c). 24 maxterms

(d). 32 maxterms

**Answer**

B

**Question 5. x+x is equal to**

(a).2x

(b).x

(c).x^2

(d).x2

**Answer**

B

**Question 6. ————– is very efficient way of solving Boolean functions.**

(a).karnaugh map

(b).Boolean algebra

(c).Boolean variables

(d).Boolean constant

**Answer**

A

**Question 7. The complement of addition of two numbers is equal to the product of their complements is the statement of ——law**

(a).idempotent law

(b).Demorgan law

(c). absorption law

(d). not a law

**Answer**

B

**Question 8. 0 and 1 are called the —————-**

(a).Boolean variable

(b).Boolean expression

(c).Boolean constant

(d).all of the above

**Answer**

C

**Question 9. x.y is equal to——————**

(a). x + y

(b). x.y

(c). x.y

(d). (x+y)(x+y)

**Answer**

A

**Question 10. in Boolean algebra standard product is called——————–**

(a).maxterm

(b).product term

(c).minterm

(d). Boolean term

**Answer**

C

Whoever needs to take the CBSE Class 9 Board Exam should look at this MCQ. To the Students who will show up in CBSE Class 9 Computer Science Board Exams, It is suggested to practice more and more questions. Aside from the sample paper you more likely had solved. These Class 9 MCQs are ready by the subject specialists themselves.

**Question 11. The principal of duality states that —-and—–are interchangeable**

(a). . and +

(b). – and +

(c). / and +

(d). + and /

**Answer**

A

**Question 12. as the number of variables in Boolean increases, the k-map becomes**

(a).more simple

(b).more easy

(c). More complex

(d).much easy

**Answer**

C

**Question 13. in Boolean algebra standard sum is called——————–**

(a).maxterm

(b).product term

(c).minterm

(d). Boolean term

**Answer**

A

**Question 14. k-map is used to————–**

(a).evaluate a Boolean expression

(b).simplify a Boolean expression

(c).both a and b

(d).make truth table

**Answer**

C

**Question 15. commutative law states that a+b is equal to——————-**

(a).b+a

(b).b-a

(c).b.a

(d).a.b

**Answer**

A

**Question 16. by distributive law we know that ab+ac is equal to—————-**

(a).a(b-c)

(b).a(b+c)

(c).a+(b.c)

(d).a(b/c)

**Answer**

B

**Question 17. Boolean algebra operates on————————**

(a).decimal numbers

(b).binary numbers

(c).octal numbers

(d).hexa numbers

**Answer**

B

**Question 18. In Boolean algebra identity elements with respect to dot (.) is ————–**

(a).1

(b).0

(c).10

(d).2

**Answer**

A

**Question 19. the idempotent law states that for two variables x and y**

(a).x+x.y=x+y

(b).x^^= x

(c).x.x=x

(d).none of the above

**Answer**

C

**Question 20. the absorption law states that for two variables x and y**

(a).x.x=x and y.y=y

(b).x.y^=y^.x

(c).x+x.y=x.y

(d).none of the above

**Answer**

C

You can easily get good marks If you study with the help of Class 9 Boolean Algebra MCQ. We trust that information provided is useful for you. NCERT MCQ Questions for Class 9 Boolean Algebra PDF Free Download would without a doubt create positive results.

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### Frequently Asked Question (FAQs)

## How many MCQ questions are there in Class 9 Chapter 6 Computer Science?

In Class 9 Chapter 6 Computer Science, we have provided 20 Important MCQ Questions, But in the future, we will add more MCQs so that you can get good marks in the Class 9 exam.