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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
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0
1
-1
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Question # 2
The function f : x→ y defined as f (x) =α∀x∈ X,α∈ y is called
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Constant function
Polynomial function
Identity function
Linear function
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Question # 3
If five triangles are constructed having sides of the lengths indicated below, the triangle that will NOT be a right triangle is
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8, 15, 17
3, 4, 5
12, 15, 18
5, 12, 13
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Question # 4
By expressing cos 113° in terms of trigonometrical ratios, answer will be
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− cos 76° = -0.7093
− cos 65° = -0.4258
− cos 67° = -0.3907
− cos 62° = -0.8520
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Question # 5
The set of even prime numbers is
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(2,4,6,8,10}
{2,4,6,8,10,12}
{1,3,5,7,9}
{2}
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Question # 6
sin
-1
[-1/2] = ______
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Question # 7
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1, 2, 3
1, 5, 9
2, 5, 8
3, 6, 9
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Question # 8
In an A.P,a +(n-a)d is
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1st term
General term
Last term
None of these
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Question # 9
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Question # 10
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A rational number
A irrational number
An even integer
A factor of 36
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Question # 11
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 # 12
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0
1
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Question # 13
If the angle between two vectors with magnitude 2 and 15 is 30
°
then their scalar product is
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15
30
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Question # 14
If a,β are the roots of ax2+bx+c=0,the equation whose roots are doubled is
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ay2 +2by+c=0
ay2+2by+4c=0
ay2+2by+c=0
ay2+by+4c=0
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Question # 15
The equation of vertical asymptotes of y = cos ecx is
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x = 0
y = 0
x =∞
y =∞
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Question # 16
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Question # 17
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-2
-1
1
2
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Question # 18
Two sets A and B are said to be disjoint if
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Question # 19
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1
2
3
4
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Question # 20
If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?
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0
2
4
7
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Question # 21
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In f(x) + c
f(x) - c
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Question # 22
Name the property used in 4 + 9 = 9 + 4
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Associative property of addition
Commutative property of addition
Distributive property
Additive identity
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Question # 23
Cot 45° = ______
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Question # 24
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Question # 25
The number of points of intersection of two curves y = 2 sin x and y = 5x
2
+ 2x + 3 is
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0
1
2
None of these
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Question # 26
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1.5
1.2
8
None of these
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Question # 27
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Question # 28
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Question # 29
cos2a=______;
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cos2 a-sin2 a
2cos2 a-1
1-2 sin2 a
All of these
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Question # 30
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x
-2
+ c
not possible
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Question # 31
A = [3] is a/an
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Square matrix
Scalar matrix
Diagonal matrix
Identity matrix
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