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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
There are two middle terms in the expansion of (a+x)n if n is
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Even +ve integer
+ve integer
Odd +ve integer
All
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Question # 2
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2
6
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Question # 3
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Question # 4
If (0, 0) and (-1, 0) are end points of a diameter, then the equation of the circle is
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Question # 5
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 6
The fifth term of an A.P. Whose first term is 5 and common difference is 3,is
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20
17
25
30
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Question # 7
The standard parabolic form of the equation f(x) = x
2
+4 x +1 is
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x(x+4)+1
(x+2)
2
-3
(x+4)
3
+ 9
x(x-2)
2
+1
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Question # 8
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Question # 9
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none of these
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Question # 10
∀a,b ε R, ab = be is a
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Commutative law of multiplication
Closure law of multiplication
Associative law of multiplication
Multiplicative identity
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Question # 11
The set {1,-1,i,-i}
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Form a group w.r.t addition
Form a group w.r.t multiplication
Does not form a group w.r.t multiplication
Not closed under multiplication
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Question # 12
Sin
-1
(-x)=
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Cos
-1
1/x
- Sin
-1
X
Cot
-1
X
None of these
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Question # 13
Which is a proper rational fraction
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Question # 14
The solution of equation x2 + 2 = 0 in the set of real number is
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Infinite set
Singleton set
Null set
None of these
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Question # 15
All letters of the word "AGAIN" are permuted in all possible ways and the words so formed (with or without meaning) are written as in dictionary, then the 50th word is
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NAAGI
NAAIG
IAANG
INAGA
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Question # 16
The general solution of tan 3x = 1 is
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Question # 17
For any equilateral r :R :η :r1 :r2 :r3 =
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1:2:3:4:5
1:2:3:3:3
1:2:4:4:4
2:1 :2 :2 :2
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Question # 18
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Question # 19
0 is a symbol of
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singleton set
Empty set
Equivalent set
Infinite set
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Question # 20
In how many ways can 5 persons be seated at a round table
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5!
4!
3!
120
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Question # 21
The matrix A = [aij]1xn is a
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Vector
Rectangular matrix
Column vector
Square matrix
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Question # 22
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Reciprocal equation
Exponential equation
Radical equation
None of these
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Question # 23
Write down the power set of {9, 11}
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Question # 24
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Question # 25
The differential equations of all conis whose axes coincide with the co-ordinate axis is
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Question # 26
Which term of the A.P 5,8,11,24.............is 320
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104th
106th
105th
64th
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Question # 27
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Question # 28
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Question # 29
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3 x 1
1 x 3
3 x 3
1 x 1
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Question # 30
Range of sin x is ______
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[-1, 1]
R
Negative real numbers
None of these
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Question # 31
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Improper rational fraction
Rational fraction
Proper rational fraction
None of above
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