ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

Every real number is

• A complex number A
• A rational number B
• A natural number C
• A prime number D

The negative square root of 9 can be written as:

• -√9 A
• √9 B
• √18 C
• -√18 D

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

• 
  A
• 
  B
• 
  C
• 
  D

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

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

a.a^-1= a^-1.a = 1 is a

• Commutative law of multiplication A
• Multiplication identity B
• Associative law of multiplication C
• Multiplication inverse D

1/3 is a decimal

• Recurring A
• Terminating B
• Non-terminating C
• None of the above D

a >b, b >c ⇒a >c is a

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

Every natural number is

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

The square roots of negative numbers is called

• Real no A
• Complex no B
• Positive no C
• Negative no D

i =

• 
  A
• 
  B
• 
  C
• 
  D

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

(7, 9) + (3, -5) =

• (4, 4) A
• (10, 4) B
• (9, -5) C
• (7, 3) D

O is ______

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

4/√49 is a

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

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

QUQ'

• 
  A
• 
  B
• 
  C
• 
  D

• Principle of equality of Fractions A
• Rule for product of fraction B
• Golden rule of fraction C
• Rule of quotient of Fraction D

• Commutative law of multiplication A
• Closure law of multiplication B
• Associative law of multiplication C
• Multiplication identity D

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

• 
  A
• 
  B
• 
  C
• 
  D

∀x,y∈R and x> 0 , y>0, if x > y

• 
  A
• 
  B
• 
  C
• None of these D

i³ =

• -1 A
• i B
• -i C
• 1 D

Every prime number is also

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

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

• 
  A
• 
  B
• 
  C
• 
  D

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

In (x +iy) y is called as

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

The conjugate of √5 i is

• √5 A
• -√5 i B
• i C
• 5i D

• Principle of equality of fractions A
• Rule for product of fractions B
• Golden rule for fractions C
• Rule for quotient of fractions D

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