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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Question # 2
If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =
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-i -15j
i-15j
i-3j
None of these
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Question # 3
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-1
0
1
undefined
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Question # 4
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Question # 5
x is a member of the set [-1, 0, 3, 5] y is a member of the set {-2, 1, 2, 4} which is possible?
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x - y = -6
x - y < -6
x - y > -6
None
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Question # 6
The measure of the acute angle between the lines represented by x2 -xy -6y2 =0 is
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120°
30°
130°
45°
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Question # 7
If n(A) = n then n(P(A)) is
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2n
n
2
n/2
2
n
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Question # 8
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Question # 9
What is range of the function g (x) =|x-3|?
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[0 ,∞ )
(0 ,∞)
(-∞ ,3]
[0,∞)
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Question # 10
tan(3π/2 +θ)=______;
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tanθ
cotθ
-tanθ
-cotθ
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Question # 11
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Question # 12
The approximate percentage increase in the volume of a cube if the length of its each edge changes from 5 to 5.02 is
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1.2%
1.5%
0.16%
100.16%
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Question # 13
The value of n, when
n
P
2
= 20 is
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3
4
6
5
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Question # 14
A function F(x) is called even if
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F(x) = F (-x)
F(x) = F(-x)
F(x) = -F(x)
2F(x) = 0
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Question # 15
If the lines 2x-3y-1=0,3x-y-5=0 and 3x+py+8=0 meet at a unique point then
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p = -14
p = -1
p =0
p=12
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Question # 16
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11
61
1
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Question # 17
A monoid (G, *) is said to be group if
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have identity element
is commutative
have inverse of each element
None of these
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Question # 18
sin (
α
+
β
) + sin (
α
-
β
)
Choose an answer
2 sin
α
cos
β
sin (2
α
β)
sin
α
cos
α
None of these
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Question # 19
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Question # 20
Which of the following is factor of x11+a11, where n is an odd integer
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x-a
x+a
2x-a
2x+a
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Question # 21
O is ______
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A positive integer
A negative integer
A natural number
An integer
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Question # 22
sin
α=
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2 sin
α
cos
α
2 sin
α
cos
β
2 sin
α
/2 cos
α
/2
1+ tan
2
α
/2
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Question # 23
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1
2
3/2
5/2
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Question # 24
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Question # 25
The slope of the normal at (5 cos, 0, 5 sin 0) to the circle. x
2
+y
2
= 25 is:
Choose an answer
tan𝜽
cos𝜽 /sin𝜽
-cot𝜽
- tan𝜽
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Question # 26
If one root of the equation x
2
- 3x + a = 0 is 2 then a = ______
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0
1
2
3
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Question # 27
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Question # 28
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Question # 29
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Question # 30
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1
0
-2
3
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Question # 31
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1
-1
0
I
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