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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
The total number of subsets that can be formed out of the set {a, b, c} is
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1
4
8
12
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Question # 2
If
u
=[3,-4],then modulus of
u
is:
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5
5i
-5
√5
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Question # 3
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Question # 4
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Question # 5
Which one is not defined∀n∈Z+
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-n!
n!
(-n)!
n!+0!=n!+1
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Question # 6
If the circumference of a circle is divided into 360 congruent parts, the angle subtended by one part at the centre of the circle is
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1
0
1'
1"
1 rad
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Question # 7
If z
1
=√-36 ,z
2
=√-25,z3 =√-16 then
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15
15i
-15i
-15
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Question # 8
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1
0
-2
3
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Question # 9
P∉ A means
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P
is subset of A
P
is an element of A
P does not belongs to A
A does not element of
P
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Question # 10
∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of
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Commutative law of addition
Associative law of addition
Additive identity
Additive inverse
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Question # 11
The conic ax2+2hxy+by2+2gx+2fy+c= 0 never represent a circle if
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a≠ b,h≠0
a=b
h≠0
h=0
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Question # 12
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perpendicular vectors
parallel vectors
concurrent vectors
none of these
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Question # 13
The term involving x
4
in the expansion of (3 - 2x)
7
is
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120
1512
1250
15120
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Question # 14
The distance of the point (2.3) from x-axis is
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2
3
5
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Question # 15
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Question # 16
w
29
= ______
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0
1
w
w
2
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Question # 17
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Free vector
Null vector
Unit vector
None of these
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Question # 18
f(x) = C is
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identity function
constant function
linear function
quadratic function
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Question # 19
The distance of point P(x,y) from focus in a parabola
y
2
=4ax, is:
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2a
a
x + a
x-a
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Question # 20
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Question # 21
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Question # 22
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none of these
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Question # 23
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 24
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Question # 25
The transpose of a zero matrix is a ______
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Column matrix
Zero matrix
Row matrix
Scalar matrix
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Question # 26
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Question # 27
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Question # 28
If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?
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0
2
4
7
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Question # 29
1.4142135... is ______
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A natural number
A rational number
A prime number
An irrational number
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Question # 30
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(a + b)c = ac + bc
a + b = b + a
(a + b) + c = a + (b + c)
a(b +c) = ab + ac
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Question # 31
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