NAT I General Science

NAT I General Science

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NAT I General Science

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Question # 1

Which is not included in the domain of Cos-1 x

Question # 2

How many different arrangements of the letters in the word QABABA are Possible?

Question # 3

If A = [aij] and b = [bij] are the matrices of the order 3x3 then A-B=

Question # 4

If α and β be irrational roots of a quadratic equation, then

Question # 5

If f(x) : A → B and g (x) : A → B then Dom [f(x) + g(x)] is

Question # 6

The number of ways in which we can courier 5 packets to 10 cities is

Question # 7

If Cosθ =0, Then θ=

Question # 8

If f(x) = x3- 2x2 +4x-1, then f(-2) =?

Question # 9

If A and B are matrices of same order than (A + B)(A + B)=

Question # 10

If p and r are integers P = 0, and p ≠ -r, which of the following must be true?

Question # 11

The average of first 100 integers is=

Question # 12

The set of the first elements of the ordered pairs forming a relation is called its

Question # 13

The value of Cos (1/2 Cos-1 1/2) is equal to

Question # 14

The mid point of the line joining (=1,-3) to(3,-5) is

Question # 15

The multiplicative inverse of x such that x = 0 is

Question # 16

If sinθ = 1 then θ =

Question # 17

x-1/(x+2)(x-2) =

Question # 18

Sec-1 x=

Question # 19

The multiplicative inverse of -1 in the set {1-,1} is

Question # 20

One of the roots of the equation 2x2 + 3x + n = 0 is the reciprocal of the other, then n = --------------------

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NAT-I Subject (General Sciences) Important MCQ's

Sr.# Question Answer
1 In the function v = 4/3 π r3, V is a function of
A. 3/4
B. r
C. v
D. π
2 A fraction in which the degree of the numerator is less than the degree of the denominator is called
A. Polynomial
B. Proper fraction
C. Rational fraction
D. Mixed fraction
3 Derivative of strictly increasing function is always
A. Zero
B. Positive
C. Negative
D. Both A and B
4 The multiplicative inverse of -1 in the set {1-,1} is
A. 1
B. -1
C. ±1
D. 0
5 If f1 (x) and f2  (x) are any two anti derivatives of a function F (x) then the value of f1 (x) = f2 (x)
A. A variable
B. A constant
C. Undefined
D. Infinity
6 Sin-1 (-x) =
A. Cos-1 1/x
B. -Sin-1 X
C. 1/sin-1x
D. Sin-1 1/x
7 If x lies in {0, 2π} and Cosec x = 2 then x =
A. π/ 6 and 5π/6
B. π +2nπ
C. nπ
D. 2π/3 and π/3
8 The Domain of f(x) = log x is
A. [0,∞]
B. (0, ∞)
C. [0,∞[
D. [∞ ,∞]
9 If A and B are matrices of same order than (A + B)(A + B)=
A. A2 + B2
B. A2 + B2 + 2AB
C. A + B
D. A2 + B2 + AB+BA
10 What is the period of Cot x?
A. 2π
B. π
C. π/2
D. 4π

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