ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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

• One A
• Two B
• Three C
• Four D

If z₁ = 1 + 2i, z₂ = 3 + 4i then

• z₁ > z₂ A
• z₁ = z₂ B
• z₁ < z₂ C
• None of these D

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

i¹⁰¹=

• i A
• i² B
• -i C
• -1 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

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

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

• Associative property of addition A
• Associative property of multiplication B
• Commutative property of addition C
• Commutative property of multiplication D

• 
  A
• 
  B
• 
  C
• 
  D

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

The product of complex numbers (a,b) and (c,d) is

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

It is not possible to find the exact value of

• π A
• √9 B
• ∛27 C
• √1 D

Zero is

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

Every real number is

• a positive integer A
• a rational number B
• a negative integer C
• a complex number D

• 
  A
• 1 B
• 
  C
• -1 D

• real number A
• complex number B
• rational number C
• irrational number D

The conjugate of √5 i is

• √5 A
• -√5 i B
• i C
• 5i D

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

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

Every whole number is

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

The set of rationals numbers between 0 and I is

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

QUQ, =

• N A
• R B
• W C
• Z D

Which of the following has the same value as i¹¹³?

• i A
• -1 B
• -i C
• 1 D

• 1 A
• 3 B
• 2-i C
• -1 D

• x A
• 
  B
• y C
• 
  D

6 is

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

The multiplicative inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

In R, the multiplicative identity is

• 0 A
• 1 B
• -1 C
• None D

• (x, y) A
• (kx, y) B
• (x, ky) C
• (kx, ky) D

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

• Closure law of addition A
• Associative law of addition B
• Additive inverse C
• Additive identity D