More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
If f:A→B is an injective function and second elements of no two of its ordered pairs are equal, then f is called
Choose an answer
1-1 and onto
Bijective
1-1 and into
None of these
Previous
Skip
Next
Question # 2
For any positive integer n
Choose an answer
ABn = Bn A ⇔ AB = BA
ABn = Bn A⇔ A,B are square matrices and AB = BA
ABn = BnA⇔ A + B
ABn = BnA ⇔ A and B are square matries
Previous
Skip
Next
Question # 3
The roots of the equation 2
2x
- 10.2
x
+ 16 = 0 are
Choose an answer
2, 8
1, 3
1, 8
2, 3
Previous
Skip
Next
Question # 4
The number of non zero rows in echelon form of a matrix is called
Choose an answer
Order of matrix
Rank of matrix
Row operation
None of these
Previous
Skip
Next
Question # 5
{1, 2, 3, 4,.....} is set of ______
Choose an answer
Natural numbers
Whole numbers
Integers
Rational numbers
Previous
Skip
Next
Question # 6
Choose an answer
Previous
Skip
Next
Question # 7
The smallest positive root of the equation tan x - x = 0 lies on
Choose an answer
Previous
Skip
Next
Question # 8
What is the period of 5 cot x=?
Choose an answer
π
-π
π/2
2π
Previous
Skip
Next
Question # 9
Choose an answer
3, -3, 11
3, 3, 11
-3, 3, -11
-3, -3, 11
Previous
Skip
Next
Question # 10
A line joining two distinct points on a parabola is called a ______ of the parabola.
Choose an answer
Chord
Tangent
Lust rectum
directrix
Previous
Skip
Next
Question # 11
A - B = ______
Choose an answer
Previous
Skip
Next
Question # 12
Choose an answer
-2x cos x
2
-2x
2
sin x
2
-x
2
sin x
-2x
2
sin x
2
Previous
Skip
Next
Question # 13
To each element of a group there corresponds ______ inverse element
Choose an answer
Two
One
No
Three
Previous
Skip
Next
Question # 14
Choose an answer
Previous
Skip
Next
Question # 15
If the focus lies on the y-axis with coordinates f(0,a) and directrix of the parabola is y = -a, the equation of parabola is:
Choose an answer
y
2
= -4 ax
x
2
= 4ay
x
2
= -4ay
y
2
= 4ax
Previous
Skip
Next
Question # 16
Choose an answer
Previous
Skip
Next
Question # 17
Digit in the unit place of the number 183! + 3
183
Choose an answer
7
6
3
0
Previous
Skip
Next
Question # 18
cos 3a =_______;
Choose an answer
3sin a - 4sin3 a
4sin a - 3sin3 a
3cos3 a - 4cos a
4cos3a - 3cos a
Previous
Skip
Next
Question # 19
Tan 30° = _____
Choose an answer
Previous
Skip
Next
Question # 20
If a > 0,b > 0, c > 0 then the roots of the equation ax2+ bx + c =0 are
Choose an answer
Real and negative
Non-real with negative real parts
Real and positive
Nothing can be said
Previous
Skip
Next
Question # 21
Choose an answer
a cot(ax + b) + c
- a cot(ax + b) + c
Previous
Skip
Next
Question # 22
Choose an answer
Previous
Skip
Next
Question # 23
The square of the distance between two points P(x
1
, y
1
) and Q(x
2
, y
2
) is
Choose an answer
Previous
Skip
Next
Question # 24
In natural logarithm the base is
Choose an answer
1
0
10
e
Previous
Skip
Next
Question # 25
The roots of the equation ax
2
+ bx + c = 0 are real and equal if
Choose an answer
b
2
- 4ac < 0
b
2
- 4ac = 0
b
2
- 4ac > 0
None of these
Previous
Skip
Next
Question # 26
Choose an answer
n if n is even
0 for any natural number n
1 if in odd
None of these
Previous
Skip
Next
Question # 27
Choose an answer
Previous
Skip
Next
Question # 28
A vector of magnitude zero is called
Choose an answer
Position vector
Null vector
Free vector
None of these
Previous
Skip
Next
Question # 29
If n is add the expansion (a + x)
n
has middle terms
Choose an answer
2
3
4
5
Previous
Skip
Next
Question # 30
Choose an answer
Previous
Skip
Next
Question # 31
i
=
Choose an answer
√1
√2
√-2
√-1
Previous
Skip
Next
Back