Page 169 - Math_Genius_V1.0_C7_Flipbook

D:\Surender Prajapati\CBSE_ICSE_Book_New\CBSE\Grade-7\Math_Genius-7\Open_File\Unit Test -2\Unit Test -2
\ 15-Nov-2024 Surender Prajapati Proof-5 Reader’s Sign _______________________ Date __________

UNIT TEST – 2

A. Choose the correct option in Questions 1 to 10.

1. Twice of an angle is equal to its complement. The measure of the angle is
(a) 30° (b) 60° (c) 45° (d) 15°
2. 1350 in exponential form of its prime factors can be written as

(a) 2 × 3 × 5 (b) 2 × 3 × 5 2 (c) 2 × 3 × 5 3 (d) 2 × 3 × 5 2
3
2
3
2
4
3. Kamal covers y cm in one step. What distance will he cover (in cm) in 135 steps?
y
(a) (b) y – 135 (c) 135 + y (d) 135y
135
4. If x and y are both supplementary and vertically opposite angles, then the value of x + 30° is
(a) 90° (b) 120° (c) 60° (d) 15°
5. By what number should (–2) be multiplied so that the product is equal to (4) ?
4
6
(a) 128 (b) 256 (c) 310 (d) 424
6. Which of the following angles will make a linear pair?

(a) x – 20°, 200° – x (b) 90° – x, 90° – x (c) x + 80°, x – 100° (d) x + 100°, x – 80°
7. “Twice of 19 is subtracted from the sum of y and z ”. This statement can be written
algebraically as
(a) y + z – 9 (b) y + z + 38 (c) y + z + 19 (d) y + z – 38

2
8. 3 × x 5 × 5y 2 is equal to
3
225xy
2
2
xy 2 xy 2xy 5xy 2
(a) (b) (c) (d)
5 5 5 5
Directions. (For Qs 9–10): In the following questions, a statement of Assertion (A) is followed
by a statement of Reason (R). Choose the correct option.

(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.

9. Assertion: 6mn, – 4mn and mn are like algebraic terms.
Reason: Terms having the same variables, raised to the same power are called like terms.

10. Assertion: 540 can be written as 54 × 10 in its standard form.
2
Reason: A number is said to be in its standard form if it is expressed as x × 10 , where
m
1 ≤ x < 10 and m is an integer.

167