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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
The set {x +iy / x, y ∈ Q} forms a group under the binary operation of
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Addition
Multiplication
Division
Both addition and multiplication
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Question # 2
In one hour, the minute hand of a clock turns through
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Question # 3
√2 +√3 +√5) = (√2 +√3 +√5: this property is called
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associative property w.r.t addition
commutative property
Closure property w.r.t addition
Additive identity
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Question # 4
The roots of the equation will be irrational if b
2
- 4ac is
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Positive and perfect square
Positive but not a perfect square
Negative
Zero
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Question # 5
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0
1
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Question # 6
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Question # 7
How many 6-Digit number can be formed without repairing any digit from the digits 0,1,2,3,4,5
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720
600
120
6-5!
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Question # 8
The set (Z, +) forms a group
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Forms a group w.r.t. addition
Non commutative group w.r.t. multiplication
Forms a group w.r.t multiplication
Doesn't form a group
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Question # 9
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Question # 10
The radius of the circle (x - 1)
2
+ (y + 3)
2
= 61 is
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8
4
64
None of these
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Question # 11
A matrix with a single row is called a
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Column matrix
Row matrix
Null matrix
Identity matrix
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Question # 12
A fixed point which lies on the axis of the cone is called its:
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axis
apex
plane
diameter
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Question # 13
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xy
y
0
x
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Question # 14
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Question # 15
The set X is
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Proper Subset of X
Not A subset of X
Improper Subset of X
None of these
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Question # 16
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Question # 17
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Question # 18
0 (zero) is
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An irrational number
A rational number
A negative integer
A positive number
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Question # 19
sin (
α -
β
)=
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sin
α
cos
β
- cos
α
sin
β
sin
α
cos
β
+ cos
α
sin
β
sin
α
cos
α
- cos
β
sin
β
sin
α
cos
α
- cos
β
sin
β
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Question # 20
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Does not exist because f is unbounded
Is not attained even though f is bounded
Is equal to 1
Is equal to -1
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Question # 21
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Associative law of multiplication
Commutative law of addition
Commutative law of multiplication
Associative law of addition
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Question # 22
If the sum of co-efficient in the expansion of (a+b)
n
is 4096, then the greatest co-efficient in the expansion is
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1594
792
924
2924
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Question # 23
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Question # 24
r + 3 >5 then which is true
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r + 2 > 4
r + 2 < 4
r + 2 = 4
None
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Question # 25
f(x) = ax + b will be an identity function if
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a = 1 , b = 1
a = 1 , b = 0
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Question # 26
If n is not natural number, then the expansion (1 + x)
n
is valid for
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Question # 27
The parabolay2=4ax open up if
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a<0
a≠0
a>0
All are incorrect
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Question # 28
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Question # 29
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Question # 30
Domain of cosh x is
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R
R -{0}
[1,∞)
[0,∞)
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Question # 31
The set of whole numbers is subset of
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The set on integers
The set of natural numbers
{1, 3, 5, 7, ....}
The set of prime numbers
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