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NAT I Engineering Mathematics MCQs With Answers
Question # 1
If the vector 2i+4j-2k and 2i +6j+xk are perpendicular then x-7
Choose an answer
4
8
14
7
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Question # 2
Every prime number is also
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Rational number
even number
Irrational number
multiple of two numbers
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Question # 3
For which of the following ordered pairs (s,t) is s + t> and s- t < -3?
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(3,2)
(2,3)
(1,8)
(0,3)
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Question # 4
If A = [a
ij
] and b = [b
ij
] are the matrices of the order 3x3 then A-B=
Choose an answer
Circle
Ellipse
Parabola
Hexagon
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Question # 5
F(x) = xx decreases in the interval
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(0,e)
(0.1)
(-∞.0)
None
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Question # 6
d/dx (3y
4
) =
Choose an answer
12y
3
dy/dx
8y
3
8y
3
dy/dx
12y
3
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Question # 7
In general matrices do not satisfy
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Not a group
A group w.r.t. subtraction
A group w.r.t. division
A group w.r.t. multiplication
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Question # 8
Sin-1 (√2/2)=?
Choose an answer
π/2
π/3
3π/4
2π
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Question # 9
The number of real roots in cube roots of 8 is ?
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n x m
m x n
km x n
m x kn
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Question # 10
If i,m,n are the direction cosines of a vector O̅P̅ then
Choose an answer
I
2
+ m
2
+ n
2
=0
I
2
- m
2
+ n
2
=1
I
2
+ m
2
+ n
2
=1
I
2
+ m
2
- n
2
=0
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Question # 11
Tan (π + Tan
-1
x) =?
Choose an answer
Tan x
X
-x
Cot
-1
x
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