ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

• Associative law of multiplication A
• Commutative law of addition B
• Commutative law of multiplication C
• Associative law of addition D

• 
  A
• 
  B
• 
  C
• 
  D

• additive property A
• multiplicative property B
• additive identity C
• multiplicative identity D

The set { 1 , -1} is closed w.r.t.

• Addition A
• Multiplications B
• Subtraction C
• None of these D

The decimal fraction in which we have finite number of digits in its decimal part is called.

• recurring decimal fraction A
• Non terminating faction B
• Non recurring fraction C
• terminating decimal fraction D

Decimal part of irrational number is

• Terminating A
• Repeating only B
• Neither repeating nor terminating C
• Repeating and terminating D

The set of positive integers, 0 and negative integers is known as the set of

• Natural numbers A
• Rational numbers B
• All integers C
• Irrational numbers D

i =

• 
  A
• 
  B
• 
  C
• 
  D

• Associate law of addition A
• Commutative law of addition B
• Additive identity C
• Closure law of addition D

3/4 is ______

• An odd number A
• An even number B
• A natural number C
• A rational number D

• 
  
  
  A
• 
  B
• 
  C
• 
  D

The square root of every incomplete square is an

• Rational numbers A
• Even numbers B
• odd numbers C
• Irrational numbers D

• Reflexive property A
• Symmetric property B
• Cancellations property w.r.t. addition C
• Transitive property D

i¹⁰¹ =

• i A
• i² B
• -i C
• -1 D

QUQ, =

• N A
• R B
• W C
• Z D

• A rational number A
• A irrational number B
• An even integer C
• A factor of 36 D

The negative square root of 9 can be written as:

• -√9 A
• √9 B
• √18 C
• -√18 D

If Z = (1,2), then Z^-1 =?

• (0.2, 0.4) A
• (-0.2 ,0.4) B
• (0.2,-0.4) C
• (-0.2,-0.4) D

The symbol of irrational is

• W A
• N B
• Q C
• Q' D

Zero is

• An irrational number A
• A rational number B
• A negative integer C
• A positive number D

• x A
• 
  B
• y C
• 
  D

• A positive integer A
• A negative integer B
• A natural number C
• An irrational number D

The square root of 2i - 20i is

• ±(5 - 2i) A
• ±(5+ 2i) B
• (5 - 2i) C
• None of these D

1.4142135... is ______

• A natural number A
• A rational number B
• A prime number C
• An irrational number D

If a is any real number and a = a is called

• symmetric property A
• Trichotomy Properties B
• Transitive Property C
• Reflexive Properties D

• -3 -2i A
• 3 +2i B
• 1 + 2i C
• 1 - 2i D

The set of rationals numbers between 0 and I is

• Finite A
• Null set B
• Infinite C
• None of these D

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

• 
  A
• 
  B
• 
  C
• 
  D

4/√49 is a

• Irrational Number A
• Prime Number B
• Rational number C
• Whole number D

• 1 A
• -1 B
• 
  C
• 
  D