ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

π is the ration of

• Area of a circle to its diameter A
• Area of a circle to its radius B
• Circumference of a circle to its diameter C
• Circumference of circle to its radius D

Every prime number is also

• Rational number A
• Even number B
• Irrational number C
• Multiple of two numbers D

∀a,b, c ε R,a +c = b + c = > a = b

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

√-1 b=

• b A
• 2 B
• 2b C
• None of these D

3.5+5.4=5.4+3.5 =8.9 this property of addition is called

• additive identity A
• assoclative property B
• commulative property C
• closure property D

• (x, y) A
• (kx, y) B
• (x, ky) C
• (kx, ky) D

If A = {x / x ∈ R ∧ x² - 16 = 0} then A =

• - x A
• Infinite set B
• Φ C
• {-4,4} D

Every natural number is

• A prime number A
• An irrational number B
• An integer C
• An even number D

∀a,b,c∈R and c>0,then

• a>b ⇒ ac < bc A
• a>b ⇒ ac > bc B
• a<b ⇒ ac > bc C
• None of these D

Geometrically the modulus of a complex number represents its distance from the

• Point (1,0) A
• Point (0,1) B
• Point (1,1) C
• Point (0,0) D

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

2.333....is a

• Irrational no A
• Complex no B
• Rational no C
• None of these D

The set {1, 2, 3, 4, ....} is called

• Set of Natural numbers A
• Set of whole numbers B
• Set of rational number C
• Set of irrational numbers D

• 
  A
• 1 B
• 
  C
• -1 D

√23 is

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

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

1/3 is ______

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

Union of the sets of rational and irrational numbers is called 6th set of

• Natural numbers A
• Real numbers B
• Whole numbers C
• Prime numbers D

In R the number of identity elements w.r.t.'.' is

• One A
• Two B
• Three C
• Four D

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

• N A
• r B
• 2r C
• π D

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

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following has the same value as i¹¹³?

• i A
• -1 B
• -i C
• 1 D

• Multiplication property A
• Additive property B
• Trichotomy property C
• Transitive property of inequality D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

The set of natural no. is closed under

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

• Rational A
• Irrational B
• Natural C
• Odd D

Every whole number is

• A real number A
• An irrational number B
• A prime number C
• A negative integer D