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\ 15-Nov-2024 Surender Prajapati Proof-5 Reader’s Sign _______________________ Date __________

Chapter assessment
A. Choose the correct option.

1. If each matchbox contains 50 matchsticks, the number of matchsticks required to fill n such boxes
is
(a) 50 + n (b) 50n (c) 50 ÷ n (d) 50 – n
2. In algebra, a × b means ab, but in arithmetic 4 × 6 is

(a) 46 (b) 64 (c) 24 (d) 10
3. “Variable” means that it
(a) can take different values (b) has a fixed value

(c) can take only 2 values (d) can take only three values
4. Sneha has x pencils in her box. She puts y more pencils in the box. The total number of pencils with
her are
(a) x + y (b) xy (c) x – y (d) x
y
5. The factors of the term –xy are
2
(a) x × y × y (b) –1 × y × y (c) –1 × x × y (d) –1 × x × y × y
6. The expression ‘one-third of y is added to x’ is written as
+
xy x y
(a) (b) + y (c) + x (d) none of these
3 3 3
7. Which of the following pairs contains like terms?
−1
2
2
(a) 4a, 2a 2 (b) 3yz, − 5yz (c) 3x y, 3xy 2 (d) 5 xy z, –xyz 2
8. If l = 3, m = −2 and n = 1, then (l + m + n) =
2
(a) 4 (b) 9 (c) 6 (d) 36
3
9. If a = 3, b = −2, c = −1, then a + b + c =
3
3
3 3 3
(a) (a + b + c) 3 (b) (a – b – c) 3 (c) a b c (d) 3abc
2
2
10. The expression 2xy − x + y is a
(a) monomial (b) binomial (c) trinomial (d) none of these
B. Assertion and Reason Type Questions.
In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R).
Choose the correct option as:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of
Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.
(d) Assertion (A) is false but Reason (R) is true.
1. Assertion (A): The like terms are xy and –6xy.
Reason (R): Like terms are terms that have the different variables factors.
2. Assertion (A): (4x + 5y) is a binomial.
Reason (R): A polynomial containing only two terms is called a binomial.

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