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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
A conditional is regarded as false only when the antecedent is true and consequent is
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True
False
Known
Unknown
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Question # 2
IfΔABC is right, law of cosine reduce to
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Law of sine
Law of tangent
Phthogorous theorem
Hero's formula
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Question # 3
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sin h x
cos h x
tan h x
cot h x
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Question # 4
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In(x
2
- x + 1)
4
+ c
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Question # 5
If a
1
= 3, r = 2, then the nth term of the G.P. is
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2.3
n-1
3.2
n
3.2
n+1
3.2
n-1
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Question # 6
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100
99
0
none of these
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Question # 7
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none of these
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Question # 8
A monoid (G, *) is said to be group if
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have identity element
is commutative
have inverse of each element
None of these
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Question # 9
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1
-1
5
2
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Question # 10
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-1
0
1
None of these
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Question # 11
∀x, y ∈ R, either x = y or x > y or x < y is
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Transitive property
Reflexive property
Trichotomy property
None of these
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Question # 12
A sequence is a function whose domain is
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N
Subset of N
R
None of these
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Question # 13
Two tangents drawn from (2,3) to the circle x2+y2 =9 are
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Real and distinct
Imaginary
Real and coincident
None of these
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Question # 14
The third term in the expansion of (1+2x) is
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-2x2
-4x2
2x2
4x2
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Question # 15
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Question # 16
What is the value of cos (cos-1 2) ?
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√2
1/2
undefine
0
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Question # 17
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Question # 18
A line segment whose end points lie on a circle is called
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The secant of the circle
The arc of the circle
The chord of the circle
The circumference of the circle
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Question # 19
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Set of whole number
Rational Numbers
Complex numbers
Whole numbers
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Question # 20
The formula an = a +(n-1)d for an A.P is called
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nth term of an A.P
Sum of first n terms
A,M between a and b
None of the above
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Question # 21
If the cutting plane is parallel to the axis of the cone and intersects both of its nappes, then the curve of intersection is:
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an ellipse
a circle
a parabols
a hyperbola
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Question # 22
Let A be a square matrix. Then, 1/2 (A-A') is
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Skew-symmetric
Symmetric
Null
None of the above
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Question # 23
The solution set of x
2
- 5x + 6 = 0 is
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{1, 3}
{2, 3}
{1, 2}
None of these
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Question # 24
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Associative law of addition
Commutative law of addition
Additive identity
Closure law of addition
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Question # 25
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-cosec
2
x
-sec
2
x
- cosec x cot x
cosec x
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Question # 26
If E = { } , then P(E)
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∅
{ }
{(2),(4),(6)....}
(∅)
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Question # 27
The sum of co-efficient in (1+x-3x
2
)
4163
is
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0
1
-1
None
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Question # 28
If distance of (a,b) from y-axis is 2 then
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a = 2
b = 2
a = b
a = 4
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Question # 29
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 # 30
Range of sin x is ______
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[-1, 1]
R
Negative real numbers
None of these
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Question # 31
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π
/ 4
π
/ 6
π
/ 3
2π
/ 3
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