CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade VIII - Linear Equations in One Variable
Question 1
1.
    • Solve :
    •  
       
      4
       
       
      (
      6
      x
      +
      6
      		)
      =
       
       
      (
      −
      5
      		)
       
       
      (
      6
      x
      +
      1
      		)
  • (
    -17
    27
    		 )
  • (
    -19
    27
    		 )
  • (
    -17
    29
    		 )
  • (
    -17
    25
    		 )
  • (
    -5
    9
    		 )
Question 2
2.
A train crosses a telegraph post in 19.68 sec and a bridge 1379.63 m long in 65.76 sec. What is the speed of the train?
  • 28.94 m/sec
  • 29.94 m/sec
  • 31.94 m/sec
  • 27.94 m/sec
  • 30.94 m/sec
Question 3
3.
    • Solve the equation
    • (
      −
      9
      x
      −
      1
      		)
      =
      5
  • -2
  • (
    -4
    3
    		 )
  • 0
  • (
    -2
    3
    		 )
  • (
    -2
    5
    		 )
Question 4
4.
    • The linear equation
    • (
      9
      x
      +
      1
      		)
      =
      (
      2
      x
      −
      8
      		)
    • is equivalent to
  • (
    9
    x
    +
    1
    		)
    =
    (
    2
    x
    −
    11
    		)
  • (
    6
    x
    +
    9
    		)
    =
    0
  • (
    7
    x
    +
    9
    		)
    =
    0
  • (
    9
    x
    +
    1
    		)
    =
    (
    2
    x
    −
    5
    		)
  • (
    8
    x
    +
    9
    		)
    =
    0
Question 5
5.
    • Which of the following equations is the same as
    • (
      9
      x
      +
      6
      		)
      =
      (
      4
      x
      +
      7
      		)
  • (
    9
    x
    +
    11
    		)
    =
    (
    4
    x
    +
    15
    		)
  • (
    9
    x
    +
    11
    		)
    =
    (
    4
    x
    +
    12
    		)
  • (
    9
    x
    +
    12
    		)
    =
    (
    4
    x
    +
    12
    		)
  • (
    9
    x
    +
    11
    		)
    =
    (
    4
    x
    +
    9
    		)
  • (
    9
    x
    +
    10
    		)
    =
    (
    4
    x
    +
    12
    		)
Question 6
6.
    • The additive inverse of the expression
    • 3
    • is
  • (
    −
    4
    		)
  • (
    −
    3
    		)
  • 3
  • (
    −
    1
    		)
  • (
    −
    5
    		)
Question 7
7.
The ages of A and B are in the ratio 10 : 9. 7 years ago, their ages were in the ratio 9 : 8. Find their present ages.
  • 50
    		:
    45
  • 70
    		:
    63
  • 60
    		:
    54
  • 90
    		:
    81
Question 8
8.
    • Which of the following equations is not the same as
    • (
      2
      x
      −
      1
      		)
      =
      (
      −
      2
      		)
  • (
    −
    4
    x
    +
    2
    		)
    =
    4
  • (
    −
    2
    x
    +
    1
    		)
    =
    2
  • (
    6
    x
    −
    3
    		)
    =
    1
  • (
    10
    x
    −
    5
    		)
    =
    (
    −
    10
    		)
  • (
    8
    x
    −
    4
    		)
    =
    (
    −
    8
    		)
Question 9
9.
    • The R.H.S of the equation
    • (
      5
      x
      +
      6
      		)
      =
      0
    • is
  • (
    −
    1
    		)
  • 0
  • (
    −
    2
    		)
  • (
    5
    x
    +
    6
    		)
  • 2
Question 10
10.
    • Find the number which bears the same ratio
    • to
    • 4
      5
    • that
    • 1
      2
    • does to
    • 4
      5
  • 11
    18
  • 9
    20
  • 7
    18
  • 1
    2
  • 9
    16