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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
Choose an answer
none of these
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Question # 2
There is no element common in
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N and W
E and W
N and O
Q and Q'
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Question # 3
Associative law of multiplication
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ab - ba
a(bc) = (ab) c
a(b + c) = ab +ac
(a +b)c = ac + bc
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Question # 4
Every identity matrix is
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Row-vector
Scalar
Column-vector
All
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Question # 5
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Y = -x log x -x + c
Y = x log x + x
Y = x log x - x + c
None of these
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Question # 6
An indicated sum of terms of a sequence is represented by
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Sn
an
S(n)
{Sn}
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Question # 7
cos
4
θ
- sin
4
θ
=
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cos4
θ
cos2
θ
-sin
θ
sin2
θ
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Question # 8
In R the left cancellation property w.r.t addition is
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Question # 9
The approximate increase in the area of a circular disc if its diameter increased form 44cm to 44.4cm is
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0.4cm
8.8πcm
17.6 πcm
35.2πcm
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Question # 10
sin (2
π
-
θ
)
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cos
θ
sin
θ
tan
θ
-sin
θ
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Question # 11
The domain of the principal tan function is
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Question # 12
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-2
-1
1
2
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Question # 13
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b = c
a = c
a = c
b = 0
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Question # 14
The value of sin [ arc cos (-1/2)] is
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Question # 15
If the roots of ax2 + 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 # 16
The inclination of a line parallel to x-axis is
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Question # 17
The period of cosec 10x is _______
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Question # 18
The exact value of cos-1 (0) is
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π/2
-π/2
3π
π-π/6
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Question # 19
Find the next two terms of 7, 9, 12, 16,...
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18, 20
19, 22
20, 25
21, 27
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Question # 20
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Question # 21
E-radius corresponding to < A is
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Question # 22
QUQ'
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Question # 23
Domain of 1+cot2θ=csc2θ is
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[0,π]
R-{x/x=nπ,n∈ z}
(-∞,+∞)
[-1,1]
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Question # 24
A die is rolled. What is the probability that the dots on the top are greater than 4?
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1/4
1/2
1/3
1/33
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Question # 25
If f(x) = x
2
- x then f(-2) is
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4
6
2
0
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Question # 26
The period of cot 8x is
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π/10
9π/7
π/9
π/8
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Question # 27
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Question # 28
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Question # 29
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28 / 81
28 / 243
81 / 28
243 / 82
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Question # 30
For f(x) = x
2
+ px +1, if f(3) = 3 then P =
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3/7
-2/5
-7/5
-7/3
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Question # 31
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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