ECAT Pre Engineering MCQ Test With Answer for Chapter 4 Mathematics

The set {E,0}, is closed under (ordinary)

• multiplication A
• addition B
• subtraction C
• division D

ax+by+c = 0 , represents a

• Circle A
• Parabola B
• Straight line C
• Quadratic circle D

• 
  A
• 
  B
• 
  C
• 
  D

The net of cartesian product AxB consists of

• domain A
• range B
• binary relation C
• ordered pair D

Addition is not operation on

• Natural numbers A
• Even numbers B
• odd numbers C
• set of integers D

If no two elements of ordered pairs of a function from A onto B are the same, then it is called

• surjective A
• injuctive B
• bijective C
• on to D

arb mean

• a is related to b A
• b is related to a B
• a is reciprocal of b C
• a is not related to b D

Such a function which is (1 -1) is called

• surjective A
• injuctive B
• bijective C
• into D

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  D

If no two elements of ordered pair of a functions from A into B are equal, then it is called.

• Surjective A
• Injuctive B
• Bijective C
• Onto D

Which of the following diagrams represent bijective function?

• 
  A
• 
  B
• 
  C
• 
  D

A semi-group having an identity is called a

• groupoid A
• non-commutative B
• abelian C
• monoid D

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  D

Function is a special type of

• relation A
• ordered pairs B
• cartesian product C
• sets D

A function∫ will have an inverse function if and only if it is a

• onto function A
• into function B
• Constant C
• one-one function D

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

• domain A
• range B
• ordered paris C
• relation D

The graph of a constant line is

• vertical line A
• parabola B
• circle C
• horizontal line D

• 
  A
• 
  B
• 
  C
• 
  D

Identity element, if it exists, is

• inverse A
• unique B
• commutative C
• associative D

The function denoted by 1/f called the

• Reciprocal function A
• Inverse function B
• Constant function C
• Reverse function D

ax+by+c = 0, represent a

• circle A
• parabola B
• straight line C
• quadratic circle D

If no two elements of ordred pair of a function from A into B are equal, then it is called

• surjective A
• injuctive B
• bijective C
• on to D

The identity function is

• surjective A
• injuctive B
• bijective C
• into D

A function f from A to B can be written as

• 
  A
• 
  B
• 
  C
• 
  D

N is closed with respect to ordinary

• addition A
• multiplication B
• addition and multiplication C
• division D

• similar images A
• distinct images B
• similar range C
• option a and c D

Function is a special type of

• relation A
• ordered pairs B
• Cartesian product C
• Set D

The inverse of a line is

• inverse A
• Line B
• quadratic C
• Circle D

The group of a constant line is

• Vertical line A
• Parabola B
• Circle C
• Horizontal line D

• injuctive as well as surjective A
• both onto and into B
• one - one and into C
• only (1 - 1) D