ECAT Pre General Science MCQ Test With Answer for Mathematics Chapter 1

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

In polar form of complex number r =

• 
  A
• 
  B
• 
  C
• 
  D

The set of rationals numbers between 0 and I is

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

The identity element with respect to subtraction is

• 0 A
• -1 B
• 0 and 1 C
• None of thes D

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

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

The√ is used for the

• Positive square root A
• Negative square root B
• +ve and -ve square root C
• Whole number D

In (x + iy), y is called as

• Imaginary part A
• Complex number B
• Real part C
• None of above D

• 
  A
• 
  B
• 
  C
• 
  D

1.4142135... is ______

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

• 
  A
• 1 B
• 
  C
• -1 D

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

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

4/√49 is a

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

If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

• (ac,bd) A
• (ac+bd, ad-bc) B
• (ac-bd , ad+bc) C
• (ac-bd , ad-bc) D

14 is not a

• Prime number A
• Whole number B
• Even number C
• Real number D

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

Decimal part of irrational number is

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

i =

• 
  A
• 
  B
• 
  C
• 
  D

• 15 A
• 15 i B
• -15 i C
• -15 D

202.04 is an example of

• Recurring decimals A
• Non-recurring decimals B
• Terminating decimals C
• None of above 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

The additive identity of real number is

• 1 A
• 2 B
• 1/2 C
• 0 D

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

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

In R, the additive inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

• real part of z A
• imaginary part of z B
• conjugate of z C
• modulus of z D

The value of x and y when (x + iy)2 = 5 - 4i

• x = 2, y = -1 A
• x = -2, y = 1 B
• x = 2, y = -i C
• x = 2, y = 2 D

Associative law of multiplication

• ab = ba A
• a(bc) = (ab) c B
• a(b+c) = ab + ac C
• (a + b)c = ac + bc D

Any whole number can be written as a product of factors which are

• Odd numbers A
• Prime number B
• Rational number C
• Even number D

a >b ⇒a +c >b +c is known as

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