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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Question # 2
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3/4
r
v
None of these
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Question # 3
Multiplicative inverse of "1" is
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+- 1
0
1
None of these
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Question # 4
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Question # 5
In triangle ABC, in which b=95, c=34, a =52
𝜊
then the value of a=
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18 cm
18.027 cm
20.7 cm
19 cm
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Question # 6
If a,b,c are three non-coplanar vector then [a +b,b +c,c +a] = _____
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[a.b.c]
2[a,b,c]
[abc]-2
2[abc]2
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Question # 7
cot
θ
= sin 2
θ
if
θ
=
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Question # 8
The curve f(x,y) = 0 has a central symmetry if
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f(-x,-y)=f(x,y)
f(x,-y)=f(x,y)
f(-x,y)=f(x,y)
f(-x,-y)≠f(x,y)
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Question # 9
The ratio in which the line y- x+ 2 =0 divides the line joining (3,-1) and (8,9) is
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2:3
-2:3
3:2
-3:2
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Question # 10
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12
6
8
none of these
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Question # 11
The nth term of an A.P is (3n+5) Its 75th term is
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26
7
21
Cannot be determined
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Question # 12
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Question # 13
The number of permutations of n objects of which there are n
1
like of one kind, n
2
like of the second kind and n
3
like objects of third kind are
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Question # 14
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Question # 15
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Question # 16
If a 1-1 correspondence can be established b/w two sets A and B, then they are called
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Equal sets
Equivalent sets
Over lapping sets
None of these
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Question # 17
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Question # 18
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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Question # 19
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Question # 20
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Question # 21
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-1
0
1
undefined
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Question # 22
Range of tan x is ______
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[-1, -]
R
Negative real numbers
R - {x | - 1 < x < 1}
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Question # 23
Under multiplication, solution set of is
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Groupoid
Abelian group
Semi group
All of these
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Question # 24
The set (Z, +) forms a group
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Forms a group w.r.t addition
Forms a group w.r.t multiplication
Non commutative group w.r.t multiplication
Doesn't form a group
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Question # 25
The real number system contains.
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Positive Numbers
Negative numbers
Zero
(option a, b and c)
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Question # 26
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Question # 27
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2
1
5
0
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Question # 28
PQ is a post of given height a, and AB is a tower at some distance;
α
and
β
are the angles of elevation of B, the top of the tower, at P and Q respectively. The height of the tower and its distance from the post are
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Question # 29
If either A = 0 or B =0,then Ax2 +By2 +2Gx +2Fy +c =0 represents a
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Circle
Hyperbola
Ellipse
Parabola
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Question # 30
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 31
If a and b are real numbers then a+b is also real number this law is called
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associative law of addition
closure law of addition
Distributive law of addition
Commutative law of addition
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