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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
Derivative of a w.r.t x is
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0
1
x
x
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Question # 2
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Question # 3
Which of the following sets is finite
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The set of natural numbers between 3 and 10
The set of rational numbers between 3 and 10
The set of real numbers between 0 and 1
The set of rational numbers between 0 and 1
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Question # 4
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2s
2
2s
3
s
3
3s
3
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Question # 5
If sin
θ
and cos
θ
are the roots of the equation ax
2
- bx + c = 0, then a, b, c satisfy the relation
Choose an answer
b
2
- a
2
= 2ac
A
2
- b
2
= 2ac
A
2
+ b
2
= c
2
B
2
+ a
2
= 2ac
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Question # 6
What is the period of 5 cot x=?
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π
-π
π/2
2π
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Question # 7
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Question # 8
Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.
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Fractinal numbers
Rational Numbers
Even Numbers
Whole Numbers
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Question # 9
If k2x2 +2hxy- 4y2 =0 represents two perpendicular lines then
Choose an answer
k = 2
k = ±2
k = -2
k ≠0
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Question # 10
The sum of n terms of a series is denoted by
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d
n
S
n
a
n
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Question # 11
The distance s of a particle in time t is given by s = t
3
- 6t
2
- 4t - 8. Its acceleration vanishes at t =
Choose an answer
1
2
3
4
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Question # 12
If origin is the mid point of (a,3) and (5,b) then
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a = -5 , b = -3
a = 5 , b =3
a = -5 , b = 3
a = 5 , b = -3
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Question # 13
A relation in which the equality is true only for some values of the known is called ______
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An identity
An equation
A polynomial
None of these
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Question # 14
cos 3a =_______;
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3sin a - 4sin3 a
4sin a - 3sin3 a
3cos3 a - 4cos a
4cos3a - 3cos a
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Question # 15
The intercepts of the plane 2x - 3y + 4z = 12 on the co-ordinate axes are given by
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2, -3, 4
6, -4, -3
6, -4, 3
3, -2, 1.5
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Question # 16
Choose an answer
1
7
4
None of these
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Question # 17
For all points (x,y) on y-axis
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x is positive
x = 0
x is negative
y = 0
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Question # 18
A combination lock on a suitcase has 3 wheels each labeled with nine digits from 1 to 9. If an opening combination is a particular sequence of three digits with no repeats, the probability of a person guessing the right combination is
Choose an answer
1 / 500
1 / 504
1 / 252
1 / 250
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Question # 19
0 (zero) is
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An irrational number
A rational number
A negative integer
A positive number
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Question # 20
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Question # 21
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Question # 22
Range of 3 sin x is ______
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[ -3, 3]
[-1, 1]
R
None of these
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Question # 23
The first three terms in the expansion of (1 - x)
-2
are
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1 - 2x + 3x
2
1 - 2x - 3x
2
1 + 2x + 3x
2
-2 - 2x +3x
2
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Question # 24
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Question # 25
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sin 2x + c
-sin 2x + c
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Question # 26
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1.5
1.2
8
None of these
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Question # 27
If A∩B=B, then n(A∩B) is equal to
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n(a)
n(a)+n(c)
n(c)
None of these
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Question # 28
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From an empty set
1
2
>2
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Question # 29
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Associative law of multiplication
Commutative law of addition
Commutative law of multiplication
Associative law of addition
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Question # 30
The solution set of the equation 4 cos
2
x - 3 + 0 is
Choose an answer
none of these
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Question # 31
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