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## MCQ Questions for Class 8 Mathematics with Answers

## Q1. The expression 7xy has the factors

(i) 7,x,y

(ii) x,y

(iii) 7,x

(iv) 7,y

(i) 7,x,y

## Q2. The expression 4xy + 7 is in

(i) one variable

(ii) two variables

(iii) no variable

(iv) none of these.

(ii) two variables

## Q3. What kind of polynomial is -5abc?

(i) Monomial

(ii) Binomial

(iii) Trinonial

(iv) None of the above

(i) Monomial

## Q4. Which of the following is an expression?

(i) 1/2

(ii) 3

(iii) 3x-2

(iv) 2

(iii) 3x-2

## Q5. The like terms of the following are

(i) x, 3x

(ii) x, 2y

(iii) 2y, 6xy

(iv) 3x, 2y

(i) x, 3x

## Q6. The value of 5x when x = 5 is

(i) 5

(ii) 10

(iii) 25

(iv) -5.

(iii) 25

## Q7. How many terms are there in the expression 7 – 3x²y?

(i) 1

(ii) 2

(iii) 3

(iv) 4

(ii) 2

## Q8. The number of terms in the expression 2x²+3x+5 is

(i) 1

(ii) 2

(iii) 3

(iv) 5

(iii) 3

##### Q9. How many terms are there in the expression 5xy + 9yz + 3zx + 5x – 4y ?

(i) 1

(ii) 3

(iii) 4

(iv) 5

(iv) 5

## Q10. The value of x² + y² when x = 1, y = 2 is

(i) 1

(ii)2

(iii) 4

(iv) 5.

(iv) 5

## Q11. The sum of -7x, 3x and 11x

(i) – 7x

(ii) 21x

(iii) 7x

(iv) -21x

(iii) 7x

## Q12. The expression x + y + z is in

(i) one variable

(ii) no variable

(iii) three variables

(iv) two variables

(iii) three variables

### Q13. Like terms in the expression 7x, 5x², 7y, -5yx, -9x², are

(i) 7x, -5yx

(ii) 5x², -5yx

(iii) 5x², -9x²

(iv) 7x, 7y

(iii) 5x², -9x²

## Q14. The value of x² – xy + y² when x = 0, y = 1 is

(i) 0

(ii) -1

(iii) 1

(iv) none of these.

(iii) 1

## Q15. The area of a rectangle with length 2l²m and breadth 31m² is

(i) l³m³

(ii) 2l³m³

(iii) 4l³m³

(iv) 6l³m³

(iv) 6l³m³

## Q16. How many terms are there in the expression 5 – 3xy ?

(i) 1

(ii) 2

(iii) 3

(iv) 5

(ii) 2

## Q17. The volume of rectangular box whose length, breadth and height is 2p,4q.8r respectively is

(i) 14pqr

(ii) 2p+4q+8r

(iii) 64pqr

(iv) 64

(iii) 64pqr

## Q18. Which of the following is a monomial ?

(i) 4x²

(ii) a + 6

(iii) a + 6 + c

(iv) a + b + c + d.

(i) 4x²

##### Q19. The value of (x + y) (x + y) + (y – z) (y + z) + (z – x) (z + x) is equal to

(i) 3x²

(ii) 3y²

(iii) 3z²

(iv) 0

(iv) 0

## Q20. If x = 3 is solution of x² + kx + 15, value of k is

(i) k = -8, x = 3

(ii) k = 8, x = 5

(iii) k = 6, x = 5

(iv) None of above

(i) k = -8, x = 3

## Q21. Value of expression ‘a(a²+a +1)+5’ for ‘ a’ = 0 is

(i) a+5

(ii) 1

(iii) 6

(iv) 5

(iv) 5

#### Q22. How many terms are there in the expression 7x² + 5x – 5 ?

(i) 1

(ii) 2

(iii) 3

(iv) 5.

(iii) 3

## Q23. Which of the following is the numerical coefficient of -5xy?

(i) 5

(ii) x

(iii) 5

(iv) y

(iii) 5

## Q24. The like terms of the following are

(i) x, 3x

(ii) x, 2y

(iii) 2y, 6xy

(iv) 3x, 2y

(i) x, 3x

## Q25. If x = 3 is solution of x² + kx + 15, value of k is

(i) k = -8, x = 3

(ii) k = 8, x = 5

(iii) k = 6, x = 5

(iv) None of above

(i) k = -8, x = 3

## Q26. The coefficient in the term 20 is

(i) 1

(ii) 2

(iii) 10

(iv) 20.

(iv) 20

## Q27. The volume of rectangular box whose length, breadth and height is 2p,4q.8r respectively is

(i) 14pqr

(ii) 2p+4q+8r

(iii) 64pqr

(iv) 64

(iii) 64pqr

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