Question

The product of a monomial and a binomial is a

(a) monomial (b) binomial

(c) trinomial (d) none of these

2. In a polynomial, the exponents of the variables are always

(a) integers (b) positive integers

(c) non-negative integers (d) non-positive integers

3. Which of the following is correct?

(a) (a – b)

2 = a2 + 2ab – b2 (b) (a – b)

2 = a2 – 2ab + b2

(c) (a – b)

2 = a2 – b2 (d) (a + b)

2 = a2 + 2ab – b2

4. The sum of –7pq and 2pq is

(a) –9pq (b) 9pq (c) 5pq (d) – 5pq

5. If we subtract –3x2y2 from x2y2, then we get

(a) – 4x2y2 (b) – 2x2y2 (c) 2x2y2 (d) 4x2y2

6. Like term as 4m3n2 is

(a) 4m2n2 (b) – 6m3n2 (c) 6pm3n2 (d) 4m3n. 7. Which of the following is a binomial?

(a) 7 × a + a (b) 6a2 + 7b + 2c

(c) 4a × 3b × 2c (d) 6 (a2 + b)

8. Sum of a – b + ab, b + c – bc and c – a – ac is

(a) 2c + ab – ac – bc (b) 2c – ab – ac – bc

(c) 2c + ab + ac + bc (d) 2c – ab + ac + bc

9. Product of the following monomials 4p, – 7q3, –7pq is

(a) 196 p2q4 (b) 196 pq4 (c) – 196 p2q4 (d) 196 p2q3

10. Area of a rectangle with length 4ab and breadth 6b2 is

(a) 24a2b2 (b) 24ab3 (c) 24ab2 (d) 24ab

11. Volume of a rectangular box (cuboid) with length = 2ab, breadth =

3ac and height = 2ac is

(a) 12a3bc2 (b) 12a3bc (c) 12a2bc

(d) 2ab +3ac + 2ac​

Answer 1

Explanation:

1 . trinomial. option C

2. integer. option A

3. (a-b)² option B

4. -5pq. optiin D

5. -4x²y² option A

6. -6m3n² option B

7. 6a² +7b + 2c. obtion B

8. 2 c - a b - ac - b c obtaion B