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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Imaginary
Rational
Irrational
Real numbers
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Question # 2
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Question # 3
Matrix multiplication is
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Commutative
Not commutative
Not associative
Not distributive
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Question # 4
If a = {2m/2m < 9 ,m€ p} , the (n A) =
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{2,3,4,5,6,7,8}
{2,4,6,8............16}
{ 4, 6}
{2,3,5,7}
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Question # 5
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 # 6
Every real number is
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A complex number
A rational number
A natural number
A prime number
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Question # 7
Domain of cosec
θ
is
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Question # 8
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(-6,4)
(-3,2)
(6,-4)
(3, -2)
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Question # 9
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quadratic function
constant function
trigonometric function
linear function
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Question # 10
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Question # 11
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0
1
1/2
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Question # 12
If a,b,c are unit vectors then |a + b|2 +|a - b|2
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4
8ab
9cos
4(a,b)
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Question # 13
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Question # 14
Two sets A and B are said to be disjoint if
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Question # 15
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 16
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Question # 17
For each natural number n, n (n+1) is
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an even
an odd
multiple of 3
Irrational
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Question # 18
The maximum value of the quadratic function f(x) = -2x2+20x,is
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4
3
50
7
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Question # 19
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Question # 20
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Question # 21
w
11
= ______
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0
1
w
w
2
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Question # 22
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Question # 23
The number of values of x in the interval [0, 5
π
] satisfying the equation 3 sin
2
x - 7 sinx + 2 = 0 is
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0
5
6
10
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Question # 24
A sequence whose reciprocal is an A.P is called
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Oscillator
H.P
G.P
None of these
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Question # 25
The equation of the sphere passing thro' (0, 0, 0), (a, 0, 0), (0, b, 0), (9, 0, c) is
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x
2
+ y
2
+ z
2
+ 2 ax +2 by + 2cz = 0
x
2
+ y
2
+ z
2
- 2ax - 2 by - 2cz = 0
x
2
+ y
2
+ z
2
- ax - by - cz = 0
x
2
+ y
2
+ z
2
+ ax + by + cz = 0
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Question # 26
The set {Z\ {0} } is group w.r.t
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Addition
Multiplication
Division
Subtraction
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Question # 27
If t is the parameter for one end of a focal chord of the parabola y
2
= 4ax, then its length is
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Question # 28
If Z
1
= 1+ i, Z
2
= 2+3i , then |Z
1
-Z
2
| =?
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√5
√7
-1-2i
√3
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Question # 29
A matrix with a single column is called
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Column matrix
Row matrix
Identity matrix
Null matrix
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Question # 30
The number of proper subset of A ={a.b.c.d} is
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3
6
8
15
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Question # 31
A square matrix A for which A
t
= -A is called a
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Column matrix
Symmetric matrix
Skew-symmetric matrix
Row matrix
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