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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
If the roots of ax
2
+ b = 0 are real and distinct then
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ab > 0
a = 0
ab < 0
a > 0, b > 0
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Question # 2
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cos 2x + c
- cos 2x + c
tan 2x + c
cot 2x + c
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Question # 3
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 # 4
The polynomial x - a is a factor of the polynomial f(x) if and only if
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f(a) is positive
f(a) is negative
f(a) = 0
None of these
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Question # 5
w
4
= ______
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0
1
w
w
2
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Question # 6
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Question # 7
Three unbiased coins are tossed. Then the probabilities of getting two heads is
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3/8
1/8
1/4
None of these
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Question # 8
If y=sin(ax+b) then y4=________:
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sin4(ax+b)
a4sin(ax+b)
a4cos(ax+b)
None of these
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Question # 9
The transpose of a row matrix is a ______
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Zero matrix
Diagonal matrix
Column matrix
Row matrix
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Question # 10
The centre of the conic x2 +16x +4y2 -16y +76 =0 is
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(0,10)
(-8,4)
(-8,-2)
(1,1)
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Question # 11
The multiplicative inverse of -3i is
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3i
-3i
-1/3i
1/3 i
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Question # 12
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A
A'
U
None of these
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Question # 13
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 # 14
A diagonal matrix in which the diagonal elements are equal is called a
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Null matrix
Identity matrix
Scalar matrix
Row matrix
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Question # 15
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cos x
- sin x
- cos x
tan x
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Question # 16
sin(π/2+θ) = _______;
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sinθ
cosθ
-sinθ
-cosθ
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Question # 17
In set builder notation the set {0, 1, 2, ............, 100} can be written as
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Question # 18
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0
1
8
∞
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Question # 19
The function discontinuous at x = 0 is (1) tan x (II) cot x (III) sec x (iv)cosec x)
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I & III
I & IV
II & IV
II & III
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Question # 20
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Question # 21
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Question # 22
The distance between the points (1, 2) and (2, 1) is
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3
6
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Question # 23
If u = 2a
i
+
i
-
k
and
v
=
i
+a
i
+ 4
k
are perpendicular then a =
Choose an answer
4
1/2
3
4/3
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Question # 24
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0
3
9
-3
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Question # 25
If D = {a} , the P(D) =
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{a}
∅
{∅,{a}}
{∅,a}
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Question # 26
Cosec 60° = ______
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Question # 27
The additive identity of real number is
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1
2
1/2
0
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Question # 28
Multiplying each side of an inequality by (-1) will:
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Not effect
Change the sign
Become zero
Not defined
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Question # 29
A fraction in which the degree of the numerator is less than the degree of the denominator is called
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Polynomial
Equation
Proper fraction
Improper fraction
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Question # 30
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Question # 31
The function f{(x, y) | y = ax
2
+ bx + c} is
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One-one function
Constant function
Onto function
Quadratic function
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