NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 10: ALGEBRAIC EXPRESSIONS
Objective Type Question

Choose the correct answer from the given four options:

Question.  1

An algebraic expression containing three terms is called a

(a)

monomial

(b)

binomial

(c)

trinomial

(d)

All of these

Question.  2

Number of terms in the expression \(3x^2y - 2y^2z - z^2x + 5\) is

(a)

2

(b)

3

(c)

4

(d)

5

Question.  3

The terms of expression \(4x^2 - 3xy\) are:

(a)

4x^2 and −3xy

(b)

4x^2 and 3xy

(c)

4x^2 and −xy

(d)

x^2 and xy

Question.  4

Factors of \(-5x^2 y^2 z\) are

(a)

−5 × x × x × y × z

(b)

−5 × x^2 × y × z

(c)

−5 × x × x × y × y × z

(d)

−5 × x × x × y × z^2

Question.  5

Coefficient of \(x\) in \(-9xy^2z\) is

(a)

9yz

(b)

−9yz

(c)

9y^2z

(d)

−9y^2z

Question.  6

Which of the following is a pair of like terms?

(a)

−7xy^2z, −7x^2yz

(b)

−10xyz^2, 3xyz^2

(c)

3xyz, 3x^2y^2z^2

(d)

4xyz^2, 4x^2yz

Question.  7

Identify the binomial out of the following:

(a)

3xy^2 + 5y − x^2y

(b)

x^2y − 5y − x^2y

(c)

xy + yz + zx

(d)

3xy^2 + 5y − xy^2

Question.  8

The sum of \(x^4 - xy + 2y^2\) and \(-x^4 + xy + 2y^2\) is

(a)

Monomial and polynomial in y

(b)

Binomial and Polynomial

(c)

Trinomial and polynomial

(d)

Monomial and polynomial in x

Question.  9

The subtraction of 5 times of y from x is

(a)

5x − y

(b)

y − 5x

(c)

x − 5y

(d)

5y − x

Question.  10

− b − 0 is equal to

(a)

−1 × b

(b)

1 − b − 0

(c)

0 − (−1) × b

(d)

− b − 0 − 1

Question.  11

The side length of the top of square table is \(x\). The expression for perimeter is:

(a)

4 + x

(b)

2x

(c)

4x

(d)

8x

Question.  12

The number of scarfs of length half metre that can be made from y metres of cloth is:

(a)

2y

(b)

y/2

(c)

y + 2

(d)

y + 1/2

Question.  13

\(123x^2y − 138x^2y\) is a like term of:

(a)

10xy

(b)

−15xy

(c)

−15xy^2

(d)

10x^2y

Question.  14

The value of \(3x^2 − 5x + 3\) when \(x = 1\) is

(a)

1

(b)

0

(c)

−1

(d)

11

Question.  15

The expression for the number of diagonals that we can make from one vertex of an n-sided polygon is:

(a)

2n + 1

(b)

n − 2

(c)

5n + 2

(d)

n − 3

Question.  16

The length of a side of square is given as \(2x + 3\). Which expression represents the perimeter of the square?

(a)

2x + 16

(b)

6x + 9

(c)

8x + 3

(d)

8x + 12

NCERT Exemplar Solutions Class 7 – Mathematics – Unit 10: ALGEBRAIC EXPRESSIONS – Objective Type Question | Detailed Answers