ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

• 
  A
• 
  B
• 
  C

√x = ______ if is a prime number

• Rational no A
• Natural no B
• Irrational no C
• Complex no D

Decimal part of irrational number is

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

• 
  A
• 
  B
• 
  C
• 
  D

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

If 4 > b or a < b than a = b is a

• Additive property A
• Transitive property B
• Trichotomy property of inequality C
• None of above D

• 
  A
• 
  B
• 
  C
• 
  D

For each real number, there is a number which is its

• Negative A
• Possitive B
• Opposite C
• Similar D

∀x,y∈R and x> 0 , y>0, if x > y

• 
  A
• 
  B
• 
  C
• None of these D

In (x +iy) y is called as

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

√2 is a number

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

• 1 A
• -i B
• i C
• 0 D

QUQ, =

• N A
• R B
• W C
• Z D

• Principle of equality of fractions A
• Rule for product of fraction B
• Rule for quotient of fraction C

a >b, b >c ⇒a >c is a

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

3/2 is

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

The multiplicative inverse of 2/3 is

• 3/2 A
• -2/3 B
• -3/2 C
• 1 D

6 is

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

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

Which element is the additive inverse of (a,b) in Complex numbers

• (a,0) A
• (0,b) B
• (a,b) C
• (-a,-b) D

14 is not a

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

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

• associative property w.r.t addition A
• commutative property B
• Closure property w.r.t addition C
• Additive identity D

Every prime number is also

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

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

The square root of 2i - 20i is

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

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

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

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

Every whole number is

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

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

• One A
• Two B
• Three C
• Four D