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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
Choose an answer
none of these
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Question # 2
Tangent is a periodic function and its period is ______
Choose an answer
2
π
3
π
π
4
π
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Question # 3
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Square matrix
Row matrix
Symmetric matrix
Null matrix
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Question # 4
If 0 = R, thenthe additive inverse of a is
Choose an answer
1/9
1/-9
a
-a
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Question # 5
The parabola y2 + 2y + x = 0 lie in _____ quadrant.
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First
Second
Third
Fourth
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Question # 6
The direction cosines of y-axis are
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1, 0, 0
0, 1, 0
0, 0, 1
1, 1, 1
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Question # 7
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0
-1
1
2
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Question # 8
If u = xi + yj, then|u|
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x
2
+ y
2
(x
2
+y
2
)
2
x
2
-y
2
√(x
2
+y
2
)
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Question # 9
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Question # 10
In one hour the minute hand of a clock turns through
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Question # 11
The roots of the equation x2 +6x-7=0,are
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1
2
1 and -7
-7
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Question # 12
If there are m rows and n columns in a matrix then its order is
Choose an answer
m x n
m x m
n x n
n x m
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Question # 13
The radius of the circle (x - 1)
2
+ (y + 3)
2
= 61 is
Choose an answer
8
4
64
None of these
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Question # 14
The system of measurement in which the angle is measured in degrees, minutes and seconds is called the
Choose an answer
circular system
CGS system
sexagesimal system
none of these
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Question # 15
When rational fraction is separated into partial fractions, the result is
Choose an answer
an identity
A fraction
A partial sum
Improper fraction
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Question # 16
If A is an event then which of the following is true
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P(A)<0
0≥P(A)≤1
P(A)>0
None
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Question # 17
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Question # 18
Which is not a half plane
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ax + by < c
ax + by > c
Both A and B
None
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Question # 19
If three unequal numbers p, q, r are in H.P. and their squares are in A.P., then the ration p : q : r is
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Question # 20
If z = (x,y) , then z ̅ =
Choose an answer
(-x,y)
(x,-y)
(-x, -y)
None of these
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Question # 21
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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 # 22
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Question # 23
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0
1
2
3
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Question # 24
A triangle has ____ elements
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3
4
5
6
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Question # 25
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Associative property of addition
Commutative property of addition
Distributive property
Additive identity
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Question # 26
w
15
= ______
Choose an answer
0
1
w
w
2
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Question # 27
The set of complex numbers forms
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Commutative group w.r.t addition
Commutative group w.r.t multiplication
Commutative group w.r.t division
Non commutative group w.r.t addition
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Question # 28
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-2
-1
1
2
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Question # 29
The distance s of a particle in time t is given by s = t
3
- 6t
2
- 4t - 8. Its acceleration vanishes at t =
Choose an answer
1
2
3
4
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Question # 30
The additive inverse of 2/3 is
Choose an answer
3/2
-2/3
-3/2
0
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Question # 31
If S is a sample space and event set E = S then P(E) is
Choose an answer
>0
1
<1
0
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