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NAT I Engineering Mathematics MCQs With Answers

Question # 1

An angle 0 is such that tan θ = 1 and cos θ is negative then

Choose an answer

Sin θ is positive

Cos θ = √2/4

cosθ = -1

sec θ is negative

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Question # 2

A relation in which the equality is true only for some values of the unknown variable is called

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An identity

An equation

A polynomial

Inverse function

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Question # 3

Every prime number is also

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Rational number

even number

Irrational number

multiple of two numbers

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Question # 4

The equation of two polynomials P(x)/Q(x) where Q(x) ≠ 0 with no common factor is called

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-10

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Question # 5

Two dice are rolled The number of possible out come in which at least one die shows 2 is?

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Question # 6

What is the conjugate of -7 -2i ?

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-7 + 2i

7 + 2i

7-2i

√53

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Question # 7

The angle a (0° < a< 180°) measured counterclockwise from positive x-axis to a non-horizontal straight line / is called the

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Rotation

Inclination

Radian

None

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Question # 8

The two consecutive positive integers whose product is 56 are

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7, 8

14, 4

28, 2

56, 1

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Question # 9

Sin^-1 (-x) =

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Cos^-1 1/x

-Sin^-1 X

1/sin-1x

Sin^-1 1/x

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Question # 10

If ab > 0 and a < 0, which of the following is negative?

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-b

-a

(a - b)²

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Question # 11

1/x² -1 = ? (in case of making partial fraction)

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Ax +B/x² -1

A/x + B/ x- 1

A/ x+1 + B/x-1

None

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