Algebraic Expressions and Identities – Class 8/MCQ

CBSE CLASS 8 MATHEMATICS
Algebraic Expressions and Identities – Chapter 9/ MCQ.

1. The algebraic equation 4xy +2yz + 5 is a ————
A. Binomial
B. Trinomial
C. Monomial
2. The number of terms in a polynomial is ————
A. One
B. Two
C. None of these.
3. The numerical coefficient of –xyz is ————–
A. -1
B. 0
C. 1
4. If we subtract 4a-7ab+3b+12 from 12a-9ab+5b-3, then the difference is ———–
A. 8a -2ab+2b-15.
B. 8a -16ab+8b-8
C. 8a – 2ab +8b – 15
5. The product of 4a and (-6bc) is ———-
A. 24abc
B. -24abc
C. –abc
6. If x +2y = 4 then 3x +6y is ———–
A. 4
B. 8
C. 12
7. The volume of a rectangular box with length, breadth and height are a, 2b and 3c respectively ——
A. 2abc
B. 3abc
C. 6abc
8. The area of a rectangle with length and breadth are 10m and 5n respectively ————–
A. 10mn
B. 5mn
C. 50mn
9. Which of the following is a binomial?
A. 3xy
B. 4l +5m
C. a+b+c+d
10. Write term which is like to 7xy?
A. 5xy
B. 5x
C. 5y

ANSWERS:

1. Trinomial

2. None of these

3. -1

4. 8a -2ab+2b-15

5. -24abc

6. 12

7. 6abc

8. 50mn

9. 4l+5m

10. 5xy.