MCQ Questions for Class 7 Math’s Chapter 12 Algebraic Expressions with Answers

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Q1. The length and breadth of a rectangular plot are I and b. Two rectangular paths each of width W run inside the plot one parallel to the length and the other parallel to the breadth. What is the total area of the paths?

(A) (l + w)(b + w) − lb
(B) lb − (l − w)(b − w)
(C) (l + b − w)w
(D) lb − (l − 2w)(b − 2w)

Q2. Add 3 mn, -5 mn, 8 mn, -4mn.

(A) 2 mn
(B) 20 mn
(C) -2 mn
(D) None of these

Q3. What is the difference between 3a + 2b and −2a − 5b?

(A) 5a + 7b
(B) – 5a – 7b
(C) 5a – 7b
(D) a – 3b

Q4. What is the coefficient of x in the expression 2z – 3xz?

(A) 3
(B) z
(C) 3z
(D) -3z

Q5. What is the coefficient of x in the expression 2 – x + y?

(A) 2
(B) 1
(C) -1
(D) None of these

Q6. Identify, in the following expressions, terms which are not constants : xy + 4.

(A) xy
(B) 4
(C) x
(D) y

Q7. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

(A) X + Y + Z
(B) XY + YZ
(C) X + YZ
(D) XZ + Y

Q8. What is the coefficient of x in the expression 1 + x + xz?

(A) z
(B) 1 + z
(C) 1
(D) 1 + x

Q9. What is the coefficient of x in the expression 4x + 3y?

(A) 1
(B) 2
(C) 3
(D) 4

Q10. An expression which contains two unlike terms is called __.

(A) binomial
(B) monomial
(C) trinomial
(D) None of these

Q11. A _________can take various values.

(A) variable
(B) expression
(C) term
(D) None of these

Q12. Get the algebraic expression of subtraction of z from y.

(A) z – y
(B) y – z
(C) – z + y
(D) None of these

Q13. How many terms are there in the expression 1.2ab – 2.4b + 3.6a?

(A) 1
(B) 2
(C) 3
(D) 4

Q14. A and B are polynomials and each is the additive inverse of the other. What does it mean?

(A) A = B
(B) A+B is a zero polynomial
(C) A−B is a zero polynomial
(D) A−B = B−A

Q15. What is the co-efficient ofy in the given algebraic expression 8 + yz.

(A) 8
(B) 1
(C) z
(D) None of these

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