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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
If a=5j + 2j,b=2i -3j, then|a+2b|=
Choose an answer
√21
√97
√39
None of these
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Question # 2
The period of 2 cos x is
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30π
7π
5π
2π
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Question # 3
If f(x) = x
2
-x then f(1) is
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0
1
2
3
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Question # 4
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Question # 5
If the terminal rays of an angle falls on any axis then the angle is called
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Allied angle
Acute angle
Standard position
Quadrantal angle
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Question # 6
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Question # 7
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 8
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Question # 9
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Question # 10
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 11
The additive identity of real number is
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1
2
1/2
0
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Question # 12
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(-1, 2)
(-1, 1)
(1, 2)
{-1}
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Question # 13
Both the roots of the equation (x - b) (x - c) + (x - c)(x - a) + (x - a)(x - b) = 0 are always
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Positive
Negative
Real
None of these
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Question # 14
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A = x, B = 1
A = 0, B = 2
A = -1, B = 1
A = x-1, B = x + 1
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Question # 15
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Question # 16
Area bounded between the curve xy=2 and the lines x=1 and x=2
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ln2 square units
ln√2 square units
ln4 square units
Square units
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Question # 17
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y/x
x/y
y/z
None
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Question # 18
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Question # 19
The set of integer is
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Finite group
A group w.r.t addition
A group w.r.t multiplication
Not a group
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Question # 20
Trival solution of homogeneous linear equation is
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(0, 0, 0)
(1, 2, 3)
(1, 3, 5)
a.b and c
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Question # 21
The corner point of the boundary lines, x- 2x
x+2y=10 is:
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(8,1)
(1,8)
(6,10)
(3,5)
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Question # 22
If a +b +c =0 then which of the following is true
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a =b =c =0
a,b =b,c =c,a
a xb=b xc =c xa
None
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Question # 23
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Question # 24
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Question # 25
The set of real numbers is a subset of
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The set of natural numbers
The set of rational numbers
The set of integers
The set of complex numbers
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Question # 26
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Question # 27
∀a,b,c∈R and c>0,then
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a>b ⇒ ac < bc
a>b ⇒ ac > bc
a<b ⇒ ac > bc
None of these
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Question # 28
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3 x 1
1 x 3
3 x 3
1 x 1
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Question # 29
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1, 2, 3
1, 5, 9
2, 5, 8
3, 6, 9
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Question # 30
If (x
1
, y
1
) and (x
2
,
y
2
) are the end points of a diameter then the centre of the circle is
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Question # 31
The points of intersection of the line y = 2x -3 and the circle x
2
+ y
2
- 3x =2y -3 = 0 are:
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two
three
less thean two
not intersect
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