Question # 1

If the vector 2i+4j-2k and 2i +6j+xk are perpendicular then x-7

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4

8

14

7

Two matrices A and B are conformable for multiplication (AB) if and only if

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Addition

Multiplication

Division

Subtraction

Which of the following is the subset of all sets ?

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A ≠ C

B = C

A = B

A ≠ B

If i,m,n are the direction cosines of a vector O̅P̅ then

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I² + m² + n² =0

I² - m² + n² =1

I² + m² + n² =1

I² + m² - n² =0

If the diagonal of a square has coordinates (1,2) and(5,6) the length of a side is

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3

4

1

5

The axis of the parabola y² = 4ax is

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x =0

Y =0

X = y

X = -y

Sin-1 (√2/2)=?

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π/2

π/3

3π/4

2π

If Sin θ =Cosθ then θ=

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30°

45°

60°

90°

The principal value of sin^-1 [√3/2] is

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π/3

-π/3

2π/3

5π/3

The equation of the normal to the circle x² + 2² = 25 at (4,3) is

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3x -4y =0

3x -4y= 5

4x + 3y=5

4x - 3y =25

If A and B are two events then P(A∪B) =? (when A and B are disjoint)

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P(A) - P(B)

P(A) x P(B)

P(A) + P(B)

P(A) + P(B) -P(A∩B)

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NAT I General Science Mathematics MCQs With Answers

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