We have compiled the NCERT MCQ Questions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Maths with Answers on a daily basis and score well in exams. Refer to the Algebraic Expressions and Identities Class 8 MCQs Questions with Answers here along with a detailed explanation.
Algebraic Expressions and Identities Class 8 MCQs Questions with Answers
Choose the correct option.
Question 1.
Which of the following is the numeral coefficient of – 3x²y²?
(a) 4
(b) 3
(c) 2
(d) -3
Answer
Answer: (d) -3
Question 2.
What kind of polynomial is -5abc?
(a) Monomial
(b) Binomial
(c) Trinonial
(d) None of the above
Answer
Answer: (a) Monomial
Question 3.
The value ofx² – 2yx + y² when x= 1; y = 2 is
(a) 1
(b) 2
(c) 4
(d) 5
Answer
Answer: (a) 1
Question 4.
How many terms are there in the expression 7 – 3x²y?
(a) 1
(b) 2
(c) 3
(d) 4
Answer
Answer: (b) 2
Question 5.
Which of the following is a binomial?
(a) 3xy
(b) 41 + 5m
(c) 2x + 3y-5
(d) 4a – 7ab + 3b + 12
Answer
Answer: (b) 41 + 5m
Question 6.
The sum of -7x, 3x and 11x
(a) – 7x
(b) 21x
(c) 7x
(d) -21x
Answer
Answer: (c) 7x
Question 7.
What do you get when you subtract. -3xy from 5xy?
(a) 3xy
(b) 5xy
(c) 8xy
(d) 2xy
Answer
Answer: (c) 8xy
Question 8.
The area of a rectangle with length 2l²m and breadth 31m² is
(a) l³m³
(b) 2l³m³
(c) 4l³m³
(d) 6l³m³
Answer
Answer: (d) 6l³m³
Question 9.
The volume of the cuboid of dimensions x, y, z is
(a) x²y²z²
(b) x³y³z³
(c) xyz
(d) x²y²z
Answer
Answer: (b) x³y³z³
Question 10.
The value of (x + y) (x + y) + (y – z) (y + z) + (z – x) (z + x) is equal to
(a) 3x²
(b) 3y²
(c) 3z²
(d) 0
Answer
Answer: (d) 0
Question 11.
Which of the following is the numerical coefficient of x² y²?
(a) 0
(b) 1
(c) x²
(d) y²
Answer
Answer: (b) 1
Question 12.
Which of the following is the numerical coefficient of -5xy?
(a) 5
(b) x
(c) 5
(d) y
Answer
Answer: (c) 5
Fill in the blanks
Question 1.
The coefficient of-5x is ………………
Answer
Answer: 5
Question 2.
An expression having only one term is called ………………
Answer
Answer: monomial
Question 3.
An expression having only three terms is called ………………
Answer
Answer: trinomial
Question 4.
The product of (4x + y) (4x – y) is ………………….
Answer
Answer: 16x² – y²
Question 5.
The sum of a a – b + 3 and 3a + 2b + 5 is ……………….
Answer
Answer: 4a + b + 8
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