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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Question # 2
The set of ordered pairs (x,y) such that ax+ by < c, and (x,y) such that ax + by>0, are called
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Linear Inequalities
Feasible regions
Half planes
Boundary
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Question # 3
The area bounded by y = x (x2 - 4) and below x - axis is
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4
0
-4
8
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Question # 4
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2
-3/2
1
0
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Question # 5
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Question # 6
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Question # 7
Only one of the root of ax2 + bx + c =0, a≠ 0 is zero if
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c = 0
c = 0,b≠ 0
b = 0,c = 0
b = 0,c≠ 0
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Question # 8
There are ______ basic techniques for solving a quadratic equation
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Two
Three
Four
None of these
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Question # 9
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Question # 10
A vector of magnitude zero is called
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Position vector
Null vector
Free vector
None of these
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Question # 11
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2x cos x2
2sinxcosx
- sin x2
2x sin x2
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Question # 12
Every relation, which can be represented by a linear equation in two variables, represents a
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Relation
Cartesian product
Function
Graph
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Question # 13
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Question # 14
The range of function f(x)=-x2+2x-1 is
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R
(-∞,0]
(-∞,1]
[0,∞)
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Question # 15
A square matrix A = [aij] is upper triangular when
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cij = 0
bij = 0
aij = 0 for all i > j
dij = 0
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Question # 16
The product of the four fourth roots of unity is
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0
1
-1
None of these
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Question # 17
tan h x = _________
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Question # 18
If z
1
= 2 + 6i and z
2
= 3 + 7i, then which expression defines the product of z
1
and z
2
?
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36 + (-32)i
-36 + 32i
6 + (-11)1
0, +(-12)i
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Question # 19
3/2 is
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An irrational number
Whole number
A positive integer
A rational number
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Question # 20
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Question # 21
Cot 45° = ______
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Question # 22
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Question # 23
If n is a negative integer n! is
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1
0
Unique
Not defined
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Question # 24
If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:
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Parallel to each other
Perpendicular to each other
Inclined at 60
o
neither parallel nor perpendicular
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Question # 25
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Question # 26
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cos 3x + c
- cos 3x + c
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Question # 27
The sum of first twenty odd integers in A.P is
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400
397
404
408
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Question # 28
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Question # 29
The sum of all positive integral multiple of 5 less than 100 is
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950
760
1230
875
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Question # 30
The set of rationals numbers between 0 and I is
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Finite
Null set
Infinite
None of these
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Question # 31
cos 6θ + cos 2 θ =_______;
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-2sin 4θ sin 2θ
2cos4θ cos2θ
2sin4θ cos2θ
2cos4θ sin2θ
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