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Algebraic Expressions Class 7 MCQs Questions with Answers
Choose the correct option.
Question 1.
The coefficient of x² in – 5x²y is
(a) -5
(b) y
(c) 5y
(d) -5y
Answer
Answer: (d) -5y
Question 2.
The expression 4a²b – 5ab² + 1 is a
(a) monomial
(b) binomial
(c) trinomial
(d) None of these
Answer
Answer: (c) trinomial
Question 3.
What is the coefficient of x in the expression 5x³ + 7x² – 5?
(a) 5
(b) 7
(c) -5
(d) 0
Answer
Answer: (d) 0
Question 4.
Which of the following pairs of terms is of unlike terms
(a) -p²q², 12p²q²
(b) – 4x²; – Axy²
(c) 41, 100
(d) qp², 13p²q
Answer
Answer: (b) – 4x²; – Axy²
Question 5.
How many terms are there in the expression 5x + 3y + 8?
(a) 1
(b) 2
(c) 3
(d) 4
Answer
Answer: (c) 3
Question 6.
Subtracting 5x + 3y from 5x – y + 8 given
(a) 4x – 8
(b) 4y – 8
(c) 8 – 4y
(d) 4x + 8
Answer
Answer: (c) 8 – 4y
Question 7.
The value of 3x² + 2x – 7 at x = -2 is
(a) 1
(b) -1
(c) 9
(d) 23
Answer
Answer: (a) 1
Question 8.
Subtracting -3x² – 1 from 2x + 1, we get
(a) – 3x² + 2x – 2
(b) – 3x² + 2
(c) 3x² + 2x + 2
(d) 3x² – 2
Answer
Answer: (c) 3x² + 2x + 2
Question 9.
The value of the expression
100 – 10x³ + 5x² at x = 0 is
(a) 10
(b) 100
(c) -10
(d) – 100
Answer
Answer: (b) 100
Question 10.
Simplify: – z² + 22z² – 5z – 11z² + 5z
(a) z²
(b) -z²
(c) 5z
(d) -5z
Answer
Answer: (b) -z²
Question 11.
The coefficient of x² in -2x²y is:
(a) -2
(b) y
(c) 2y
(d) -2y
Answer
Answer: (d) -2y
Question 12.
The expression 4p²q – 4pq² + 1 is a
(a) monomial
(b) binomial
(c) trinomial
(d) none of these
Answer
Answer: (c) trinomial
Fill in the blanks
Question 1.
The degree of the polynomial 5x³ – 3x² + 6x4 + 7 ……………….
Answer
Answer: 4
Question 2.
An algebraic expression having only two terms is called a ……………..
Answer
Answer: binomial
Question 3.
The value of x + 6 when x = -5 is ………………
Answer
Answer: 1
Question 4.
Constants have ……………….. value.
Answer
Answer: fixed
Question 5.
The terms having same literal factors are called ………………
Answer
Answer: like terms
Question 6.
The degree of -1x² is ………………… [-2/2]
Answer
Answer: 2
Question 7.
The degree of 1 is ………………… [1/0]
Answer
Answer: 0
Question 8.
The degree of the expression 5x – 1 is …………………
Answer
Answer: 1
Question 9.
The degree of the expression 1 – 3x² is …………………
Answer
Answer: 2
Question 10.
The degree of the expression 2x² – xy² + x is ………………… [3/6]
Answer
Answer: 3
Question 11.
The degree of the expression 5 – x + x²y² – 3x³ is ………………… [3/4]
Answer
Answer: 4
Question 12.
The numerical coefficient of \(\frac {-3}{2}\) x is ……………….
Answer
Answer: \(\frac {-3}{2}\)
Question 13.
The degree of 8 is …………………
Answer
Answer: 0
Question 14.
In the algebraic expression (3a + 4b – c – 4a + 3ab), the like terms are 3a and ………………..
Answer
Answer: -4a
Question 15.
In the algebraic expression (3a²b + 3ac² + 5ab² – 7a²b² + 5c²a – 20b²a), the like terms are 3ac², 5c²a; 5ab² and ………………….
Answer
Answer: -20b²a
Question 16.
(2x – 7) is a ………………… [binomial/monomial]
Answer
Answer: binomial
Question 17.
5x is a ……………….. [binomial/monomial]
Answer
Answer: monomial
Question 18.
A term of an expression having no literal factor is called a …………………… term.
Answer
Answer: constant
Question 19.
An algebraic expression having only one term is called a ………………….
Answer
Answer: monomial
Question 20.
When -3x² is subtracted from 0, we get ……………….
Answer
Answer: 3x²
Question 21.
We get ……………….. when (x – 2x²) is subtracted from 1.
Answer
Answer: 1 – x + 2x²
Question 22.
The Value of [latex]\frac {x+y}{5}[/latex] at x = 1 and y = 4, is …………………
Answer
Answer: 1
Question 23.
The value of 4(a + b + c) at a = -1, b = 2 and c = 1, is ……………….
Answer
Answer: 8
Match the following
| Column A | Column B |
| (i) The coefficient of x in 5x³ – 2y² – 5x + 7 is | (a) -33 |
| (ii) The degree of the polynomial – 7a² + 5a³ – 3a + 5 is | (b) 10 – 3xy |
| (iii) The value of the expression 5x³ – 2x + 3 when x = – 2 is | (c) -3xy |
| (iv) The sum of – 5xy; 3xy and -xy is | (d) -5 |
| (v) From 5xy – 3 subtract 7 + 2xy is | (e) 3 |
Answer
Answer:
| Column A | Column B |
| (i) The coefficient of x in 5x³ – 2y² – 5x + 7 is | (d) -5 |
| (ii) The degree of the polynomial – 7a² + 5a³ – 3a + 5 is | (e) 3 |
| (iii) The value of the expression 5x³ – 2x + 3 when x = – 2 is | (a) -33 |
| (iv) The sum of – 5xy; 3xy and -xy is | (c) -3xy |
| (v) From 5xy – 3 subtract 7 + 2xy is | (b) 10 – 3xy |
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