CBSE Class 8 Maths Algebraic Expressions and Identities Quiz 1

1. The expression x + 3 is in

A one variable B two variables C no variable D none of these.

2. The expression 4xy + 7 is in

A one variable B two variables C no variable D none of these.

3. The expression x + y + z is in

A one variable B no variable C three variables D two variables.

4. The value of 5x when x = 5 is

A 5 B 10 C 25 D -5.

5. The value of x² - 2x + 1 when x = 1 is

A 1 B 2 C -2 D 0.

6. The value of x² + y² when x = 1, y = 2 is

A 1 B 2 C 4 D 5.

7. The value of x² - 2yx + y² when x = 1, y = 2 is

A 1 B -1 C 2 D -2.

8. The value of x² - xy + y² when x = 0, y = 1 is

A 0 B -1 C 1 D none of these.

9. Which of the following is a monomial?

A 4x² B a + 6 C a + 6 + c D a + b + c + d.

10. Which of the following is a binomial?

A 3xy B 4l + 5m C 2x + 3y - 5 D 4a - 7ab + 3b + 12.