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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Question # 2
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1
0
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Question # 3
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Question # 4
The multiplicative inverse of -3i is
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3i
-3i
-1/3i
1/3 i
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Question # 5
The point of concurrency of the right bisectors of the sides of a triangle is called
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incentre
circum center
e-center
centroid
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Question # 6
The line y = 2 x + c is a tangent to the parabola y
2
= 16 x if c equals
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-2
-1
0
2
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Question # 7
The number of proper subset of A ={a.b.c.d} is
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3
6
8
15
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Question # 8
Sum of first n terms of an arithmetic series is
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Question # 9
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Question # 10
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Question # 11
The general term in the expansion of (a+x)n is
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(r-1)th term
(r+1)th term
rth term
none
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Question # 12
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Question # 13
If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=
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√7
√41
√19
√(2&7)
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Question # 14
G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are
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2, 2, 2
3, 3, 3
2, 2, 4
2, 3, 4
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Question # 15
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Biconditional
Implication
Antecedent
Hypothesis
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Question # 16
The fifth term of (a+2x3)17 is
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4013 x3a13
2208a13 x12
223x7a18
38080a13 x12
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Question # 17
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Question # 18
The end points of the major axis of the ellipse are called its
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Foci
Vertices
Co - vertices
None of these
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Question # 19
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Question # 20
1st four terms of the expansion (1-x)
-2
are
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1 + 2x + 3x
2
+ 4x
3
3x
2
+ 2x + 1
1 + 3x + 4x
2
+ 5x
3
None of these
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Question # 21
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Question # 22
(0.90)
1/2
is equal to
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0.99
0.90
0.80
0.88
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Question # 23
If b
1
, b
2
, b
3
, ... are in G.P. with first term unity and common ratio r, then the minimum value of b
1
- b
3
+ b
5
is equal to
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3/4
1/4
1
None of these
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Question # 24
The fixed point from which all the points of a circle are equidistant is called the
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chord of the circle
centre of the circle
diameter of the circle
radius of the circle
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Question # 25
If sin
α
and cos
α
are the roots of the equation px
2
+ qx + r =0, then
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p
2
- q
2
+ 2pr = 0
(p + r)
2
= q
2
- r
2
p
2
+ q
2
- 2pr = 0
(p - r)
2
= q
2
+ r
2
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Question # 26
For a positive integer n
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n! = n(n + 1)
n! = n(n+1)!
n! = n(n - 1 )
n! = n(n - 1)!
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Question # 27
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Two real roots
Two positive roots
Two negative roots
One positive and one negative root
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Question # 28
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Question # 29
Every recurring decimal represents
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A natural number
A rational number
An irrational number
A whole number
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Question # 30
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0
1
1/2
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Question # 31
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