JKBOSE Class 8th Mathematics Paper 2021

JKBOSE Class 8th Mathematics Paper 2021 (WZ)
CLASS-VIII
MATHEMATICS – T2
Time Allowed: 2:30 Hrs. Maximum Marks: 40

JKBOSE Class 8th Mathematics Paper 2021

Note: The students shall be required to attempt 70% of their choice, which is equivalent to 28 marks and the same shall be raised to 100% (40 marks) on a proportionate basis.

MULTIPLE CHOICE QUESTIONS (Each carries one mark) 

1. To construct a quadrilateral, we need to know two adjacent side and angles.

(a) One

(b) Two

(c) Three

(d) All four angles

2. If two diagonals are given, then we can construct a:

(a) Rhombus

(b) Rectangle

(c) Kite

(d) Parallelogram

3. A polygon that has a minimum number of sides is:

(a) Triangle

(b) Square

(c) Rectangle

(d) Angle

4. Can we draw a square with a side length equal to 7cm?

(a) Yes

(b) No

(c) Cannot be determined

(d) None of the above

5. All the sides of a regular polygon are

(a) Equal in length

(b) Unequal in length

(c) Parallel to each other

(d) None of these

6. The ratio 4: 25 converted to percentage is

(a) 8%

(b) 4%

(c) 16%

(d) 25%

7. There are 50 students in a class of which 40 are boys and the rest are girls. The ratio of the number of boys and the number of girls is 0

(a) 2:3

(b) 1:5

(c) 4:1

(d) 2:5

8. A toy marked at Rs 40 is available for Rs 52. What percent discount is given on the marked price?

(a) 10%

(b) 20%

(c) 25%

(d) 40%

9. Mithlesh purchased a T.V. for Rs 10000 and sold it for Rs 8000. Find her loss %.

(a) 10%

(b) 20%

(c) 40%

(d) 60%

10. The salary of Manish is Rs 10000. His salary gets increased by 10%. Find his increased salary.

(a) Rs 9000

(b) Rs 11000

(c) Rs 8000

(d) Rs 12000

11. The expression x + y + z is in

(a) One variable

(b) no variable

(c) three variables

(d) two variables

12. Which of the following is a binomial?

(a) 3xy

(b) 41 + 5m

(c) 2x + 3y-5

(d) 4a – 7ab + 3b+ 12

13. How many terms are there in the expression 4a – lab + 3b + 12?

(a) 1

(b) 2

(c) 3

(d) 4

14. The coefficient in the term –5x is

(a) 5

(b) – 5

(c) 1

(d) 2

15. What do you get when you subtract -3xy from 5xy?

(a) 3xy

(b) 5xy

(c) 8xy

(d) xy

16. The common factors 12y and 30 is

(a) 6

(b) 12

(c) 30

(d) 6y

17. The common factor of 14a²b and 35a⁴b² is

(a) a⁴b²

(b) 35a⁴b²

(c) 14a²b

(d) 7a²b

18. The factorisation of 6x – 42 is

(a) 6(x-7)

(b) 3(x-7)

(c) 2(x-7)

(d) 6(x+7)

19. The factorisation of 12a2b+15ab2 is

(a) 3ab (4a +5b)

(b) 3a²b (4a + 5b)

(c) 3a²b²(4a+5b)

(d) 3a²b²

20. The factorisation of 49p2 – 36 is

(a) (7p+6)(7p – 6)

(b) (6p+7)(6p – 7)

(c) (7p+6)²

(d) (7p-6)²

21. The area of a square of side a is

(a) a

(b) a²

(c) 2a

(d) 4a.

22. The area of a triangle with base b and altitude h is

(a) 1/2bh

(b) bh

(c) 1/3bh

(d) 1/4bh

23. The area of a circle of radius r is

(a) 1/2π² 

(b) r²

(c) π r²

(d) 1/4πr²

24. The surface area of a cuboid of length 1, breadth b and height h is

(a) lbh

(b) lb + bh + hl

(c) 2 (lb + bh + hl)

(d) 2(1 + b)h

25. The area of a rhombus is 60 cm2. One diagonal is 10 cm. The other diagonal is

(a) 6 cm

(b) 12 cm

(c) 3 cm

(d) 24 cm

26. The expression that contains Two terms is called a……….
27. The area of a rhombus is…………
28. 11⁴/11² = ………….
29. The value of (-1)⁵⁰⁰ = …………
30. Factorised form of 4y2 – 12y + 9 is……….
31. a²b² = …………
32. The volume of a rectangular box with length 2x. breadth 3y and height 4z is………….
33. The factorisation of 2x + 4y is ………….
34. Discount = Discount% of ……….
35. 15% increase in the price of an article which is Rs 1620, is an increase of Rs ………
36. The sum of exterior angles of a polygon is equal to ……….
37. The value of expression 5n – 2, when n = −2 is………
38. Amount, when interest is compounded annually, is given by the formula………
39. The product of a², 2a², 5a¹⁰ is …………….
40. 20% of 400 is……….