MATHEMATICS MCQ CLASS 8

SELF EVALUATION -1

1. Smallest whole number is


1. +1
2. -1
3. 0
4. 10



2. Smallest prime number is


1. 2
2. 1
3. 0
4. 3



3. An additive inverse of16/(-24)is


1. 2/(-3)
2. 2/3
3. 3/2
4. (-3)/2



4. Which of the following is an additive Identity?


1. 1
2. 0
3. 4
4. none of these



5. What will be the value of 3/(-5) × (-5)/3


1. 2
2. 1
3. 3
4. -5



6. What will be the value of 5/9 + (-8/9) ?


1. -1/3
2. 2/5
3. 1/9
4. 5/9



7. How many rational numbers will be there between two rational numbers?


1. 1
2. 10
3. 100
4. infinity



8. 11/24 + (....) = -1/6. What will be in the blank space?


1. -5/8
2. 5/8
3. 3/8
4. -3/8



9. The product of 0•3 × 0•3 will be


1. 0•9
2. 0•09
3. 0•009
4. 9



10. The number 0 is


1. positive
2. negative
3. neither positive nor negative
4. none of these



11. The square root of 31•36 will be


1. 6•5
2. 3•6
3. 5•6
4. 8•4



12. Which of the following is the square of an odd number?


1. 144
2. 169
3. 196
4. 256



13. The value of √(676)


1. 26
2. 25
3. 36
4. 62



14. The square root of 256/441 will be


1. 21/16
2. 16/21
3. 13/9
4. 16/12



15. What will be the value of (24)² ?


1. 675
2. 657
3. 576
4. 756



16. A Pythagorean triplet will be


1. (5,12,13)
2. (2,3,4)
3. (4,6,8)
4. none of these



17. The value of √(196×16) will be


1. 56
2. 64
3. 96
4. 224



18. The cube of number 11 will be


1. 1221
2. 1121
3. 1331
4. 1241



19. What is ∛(729) equal to ?


1. 8
2. 9
3. 7
4. 19



20. What will be the cube root of 27000 ?


1. 27
2. 270
3. 30
4. 300



21. Which of the following is not a perfect cube number?


1. 1000
2. 125
3. 63
4. 27



22. What will be the unit digit of the cube of 5?


1. 9
2. 7
3. 6
4. 5



23. aᵐ × aⁿ =


1. aᵐ⁻ⁿ
2. aᵐ⁺ⁿ
3. aᵐⁿ
4. aᵐ/aⁿ



24. The correct value of 5⁻³ will be


1. 5
2. 125
3. 1/(125)
4. 15



25. (−7)⁻⁵ what is -5 called ?


1. power
2. cube
3. square
4. -5



26. How many numbers are there between (14)² and (15)²?


1. 28
2. 29
3. 30
4. 58



27. Value of x⁰ will be


1. 0
2. x
3. 1
4. 1/x



28. The numerical value of (999)⁰ will be


1. 0
2. 1
3. 9
4. 27



29. Who is Ramanuj ?


1. Scientist
2. Biologist
3. Chemist
4. Mathematician



30. If in a right angled triangle ABC,∠B =90°, AB = 6 cm and BC = 8 cm then the value of AC will be


1. 9 cm
2. 10 cm
3. 12 cm
4. 15 cm



31. If a = -1 and b = 2 then the value of aᵇ + bᵃ will be


1. 3/2
2. 2/3
3. 1/2
4. 2



32. The standard form of 0.005 is


1. 5 × 10⁻²
2. 5 ×10⁻³
3. 5 ×10⁻⁴
4. 85 ×10⁻⁵



33. The general form of 8 × 10⁻³ is


1. 0•008
2. 008
3. 0•8
4. 8



34. If the number 72x is divisible by 9 then the value of x is


1. 8
2. 9
3. 7
4. 3



35. If 2ˣ⁻³ = 1 then the value of x will be


1. 4
2. 8
3. 3
4. 0



36. Which is correct for three digit number abc


1. a+b+c
2. a + 10b + 100c
3. a×b×c
4. 100a + 10b + c



37. If l = 2 and m = 3then the value of l² + m² will be


1. 13
2. 5
3. 36
4. 23



38. Which of the following is trinomial algebraic expression?


1. x + 4y
2. x²+x-5
3. x² + 7xy
4. 5xy²



39. The correct value of (92)²-(8)² is


1. 8400
2. 840
3. 100
4. 84



40. The solution to 15 + x/2 = 29 will be


1. x = 28
2. x = 30
3. x = 58
4. x = 29/2



41. Product of (a+b)(a-b) will be


1. a² + b
2. a + b
3. a - b
4. a² - b²



42. If the sum of three consecutive integers is 51, then the integers will be


1. 16,17,18
2. 15,16,17
3. 51,52,53
4. none of these



43. The value of y% of one fourth of x will be


1. (x/y) × 100
2. xy/400
3. (y/x) × 200
4. xy/200



44. What will be the value of y% of half of x ?


1. (x/y) × 100
2. xy/100
3. (y/x) × 200
4. xy/200



45. The simple interest on Rs 500 at the rate of 5% per annum for 2 years will be


1. Rs. 20
2. Rs. 40
3. Rs. 50
4. Rs. 60



46. What kind of relationship (ratio) is there between speed and distance ?


1. Direct proportion
2. Inverse proportion
3. Part proportion
4. No proportion



47. The opposite angles of a parallelogram are


1. Equal
2. Supplementry
3. Proportional
4. None of these



48. Which is not correct for Euler's formula F + V = E + 2 ?


1. F = Number of faces
2. V = Number of points
3. E = Number of edges
4. 2 numbers



49. What will be the class symbol of class interval 10 - 20 ?


1. 10
2. 15
3. 20
4. 30



50. The values of letters A and B in



	A	2
+	3	B
-	-	-
1	2	9
-	-	-

1. (7,9)
2. (9,7)
3. (7,7)
4. (9,9)