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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
3.5+5.4=5.4+3.5 =8.9 this property of addition is called
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additive identity
assoclative property
commulative property
closure property
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Question # 2
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Question # 3
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3
6
0
None of these
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Question # 4
If a,β are the roots of ax2+bx+c=0,the equation whose roots are doubled is
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ay2 +2by+c=0
ay2+2by+4c=0
ay2+2by+c=0
ay2+by+4c=0
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Question # 5
The range of y = sin x is ______
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[1, -1]
[-1, 1]
[0, -1]
[-
∞
+
∞
]
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Question # 6
The set Q
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Forms a group under addition
Does not form a group
Contains no additive indentity
Contains no additive inverse
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Question # 7
In an A.P,a +(n-a)d is
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1st term
General term
Last term
None of these
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Question # 8
Every relation, which can be represented by a linear equation in two variables, represents a
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Relation
Cartesian product
Function
Graph
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Question # 9
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0
1
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Question # 10
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360°
180°
90°
None of these
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Question # 11
The angle between the vectors 3i + j - k and 2i - j + k is
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Question # 12
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1
-1
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Question # 13
The value of p for which both the roots of the equation 4x2- 20x + (25p2+ 15 p - 66) = 0 are less than 2, lies in
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Question # 14
If the distance of any point on the curve from any of the two lines approaches zero then it is called
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Axis
Directrices
Asymptotes
None
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Question # 15
A square matrix A = [aij] is upper triangular when
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cij = 0
bij = 0
aij = 0 for all i > j
dij = 0
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Question # 16
Identity w.r.t intersection in a power set of any set is
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∅
Set itself
Singleton set
{0}
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Question # 17
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Question # 18
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Question # 19
3/4 is ______
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An odd number
An even number
A natural number
A rational number
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Question # 20
The set of integers is a subset of
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The set of natural numbers
The set of whole numbers
The set of prime numbers
The set of rational numbers
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Question # 21
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none of these
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Question # 22
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Question # 23
The set of months in a year beginning with S.
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{September, October, November}
Singleton set
Null set
Empty set
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Question # 24
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N
r
2r
π
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Question # 25
Another name of quadratic equation is
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Polynomial
2nd degree polynomial
Linear equation
simaltaneous equations
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Question # 26
O (
0,0
)
is called:
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Position vector
Free vector
Unite vector
Null vector
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Question # 27
a.a
-1
= a
-1
.a = 1 is a
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Commutative law of multiplication
Multiplication identity
Associative law of multiplication
Multiplication inverse
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Question # 28
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None of these
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Question # 29
Domain of tangent function is
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Question # 30
If A is a non singular matrix then A
-1
= ______
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Question # 31
For a square matrix A, if A = A
t
, then A is called
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matrix
Transpose
Symmetric
Non-symmetric
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