ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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

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

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

The set {0,-1} hold closure property under

• Addition A
• Both a & c B
• Multiplication C
• None of these D

The additive inverse of 2/3 is

• 3/2 A
• -2/3 B
• -3/2 C
• 0 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

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

• 
  A
• 
  B
• 
  C
• 
  D

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

π is ______

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

Every recurring decimal represents

• 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

The negative square root of 9 can be written as:

• -√9 A
• √9 B
• √18 C
• -√18 D

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

• x A
• 
  B
• y C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

The order axioms are satisfied by set of

• C A
• C and R B
• R C
• None of these D

Gooch crucible is made of :

• Brass. A
• Porcelain. B
• Bronze. C
• Gold. D

4/√49 is a

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

The identity element with respect to subtraction is

• 0 A
• 1 B
• -1 C
• Does not exist D

The solution set of the equation |3x + 2| = 5 is

• 
  A
• 
  B
• 
  C
• 
  D

The identity element with respect to subtraction is

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

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

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

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

In (x + iy) x is the known as

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

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

• √3 i A
• √7 B
• -2-i C
• √5 D

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

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

∀ z ∈ C, multipliucative is

• (1,1) A
• (1,0) B
• (0,1) C
• None of these D

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

Which of the following has the same value as i¹¹³?

• i A
• -1 B
• -i C
• 1 D