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

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

For any real numbers x,y,xy=o ⇒

• x ≠ 0 ∧ y ≠ 0 A
• x = 0 ∨ y = 0 B
• x = 0 C
• y = 0 D

i⁹ =

• i² A
• -1 B
• 1 C
• i D

1/3 is a decimal

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

• 
  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

The set of natural no. is closed under

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

• 
  A
• 1 B
• 
  C
• -1 D

3/4 is ______

• An odd number A
• An even number B
• A natural number C
• A rational number D

The equation |x + 4| = x has solution

• x = -2 A
• x = 2 B
• x = -4 C
• x = 4 D

What is the conjugate of -7 -2i ?

• -7 + 2i A
• 7 +2i B
• 7 -2i C
• √53 D

The equation |x +4| = x has solution

• x = -2 A
• x = 2 B
• x = -4 C
• x = 4 D

If z = (x,y) , then  z ̅  =

• (-x,y) A
• (x,-y) B
• (-x, -y) C
• None of these D

In polar form of complex number r =

• 
  A
• 
  B
• 
  C
• 
  D

∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is

• Trichotomy property A
• Transitive property B
• Symmetric property C
• Additive property D

• 
  A
• 
  B
• 
  C
• 
  D

Every recurring decimal represents

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

• 
  A
• 
  B
• 
  C
• 
  D

(a,0) x (c,0) =

• (0,ac) A
• (ac,0) B
• (0,0) C
• (a,c) D

The additive inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

Every real number is

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

6 is

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

Additive inverse of - a - b is

• a A
• -a + b B
• a - b C
• a + b D

• x A
• 
  B
• y C
• 
  D

• 0 A
• 1 B
• -1 C
• 2 D

• Reflexive property A
• Symmetric property B
• Transitive property C
• Additive property 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

I is not

• Real number A
• Natural number B
• Prime Number C
• Whole Number 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 = -1 C
• X = 2, y = 2 D