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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Associative law of multiplication
Commutative law of addition
Commutative law of multiplication
Associative law of addition
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Question # 2
If a > 0, b > 0, c > 0, then the roots of the equation ax
2
+ bx + c = 0 are
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Real and negative
Non-real with negative real parts
Real and positive
Nothing can be said
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Question # 3
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Question # 4
The angle between lines xy =0 is
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45°
60°
90°
180°
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Question # 5
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8
1/56
56
None of these
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Question # 6
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 # 7
A relation in which the equality is true only for some values of the known is called ______
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An identity
An equation
A polynomial
None of these
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Question # 8
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Question # 9
The point lying on the terminal rat of -270° is
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(1,0)
(0,-1)
(0,1)
(-1,0)
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Question # 10
A function from X to Y is written as
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f : X to Y
f : Y to Y
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Question # 11
Which of the following is a quadrantal angle
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30°
45°
60°
90°
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Question # 12
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The law of consines
The law of sines
The law of tangents
None of these
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Question # 13
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Question # 14
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 15
The point of contact of the circles x
2
+ y
2
- 6x -6y+10 = 0 and x
2
+ y
2
=2 is
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(-3 ,2)
(1 , 3)
( -2 , -1)
None of these
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Question # 16
The solution of the equation cos
2
θ
+ sin
θ
+ 1 = 0 lies in the interval
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Question # 17
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Principle of equality of fractions
Rule for product of fraction
Rule for quotient of fraction
Golden rule of fractions
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Question # 18
For Cosine Rule of any triangle ABC, b
2
is equal to
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a
2
- c
2
+ 2ab cos A
a
3
+ c
3
- 3ab cos A
a
2
+ c
2
- 2ac cos B
a
2
- c
2
4bc cos A
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Question # 19
How many terms of the A.P 3,6,9,12,15...........must be taken to make the sum 108
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8
6
7
36
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Question # 20
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Addition
Multiplication
Division
Both addition and multiplication
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Question # 21
Ifα,β are non-real roots of ax2 + bx +c =0 (a,b,c∈ Q),then
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α = β
αβ = 1
α = β
α = 1
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Question # 22
Two quadratic equation in which xy term is missing and the coefficients of x
2
and y
2
are equal, give a linear equation by ______
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Addition
Subtraction
Multiplication
Division
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Question # 23
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none of these
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Question # 24
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Question # 25
Cos (
α
+
β
) - cos (
α
-
β
) =
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-2 sin
α
sin
β
2 sin
α
cos
β
-2 sin
α
cos
α
4 sin
α
cos
β
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Question # 26
The negation of given number is a
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Binary operation
Unary operation
Relation
None of these
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Question # 27
The point which is closet to the focus of a parabola is:
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vertex
Chord
Focus
Directix
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Question # 28
A function from A to B is denoted by
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f: A→ B
f: B → A
f: → A :B
f → A→ B
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Question # 29
The equation x2+ y2- 8x+ 6y+ 25= 0 represents
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A circle
A pair of straight lines
A point
None of these
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Question # 30
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Question # 31
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0
1
1/2
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