ECAT Pre General Science MCQ Test With Answer for Mathematics Chapter 1

The identity element with respect to subtraction is

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

What is the conjugate of -6 -i

• -6 +i A
• 6 + i B
• -6 -i C
• 6 -i D

• 
  A
• 
  B
• 
  C
• 
  D

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

• One A
• Two B
• Three C
• Four D

Name the property used in 4.1 + (-4.1) = 0

• Additive inverse A
• Multiplication inverse B
• Additive identity C
• Multiplication identity D

The multiplicative inverse of (a,b) is

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

Name the property used in 1000 x 1 = 1000

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

The order axioms are satisfied by set of

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

The symbol of irrational is

• W A
• N B
• Q C
• Q' D

π is ______

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

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

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

i³ =

• -1 A
• i B
• -i C
• 1 D

• Set of whole number A
• Rational Numbers B
• Complex numbers C
• Whole numbers D

In (x + iy), y is called as

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

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

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

The property used in -3 <-2 ⇒0 <1

• Commutative property A
• Additive property of inequality B
• Additive inverse C
• Additive identity D

∀x, y ∈ R, either x = y or x > y or x < y is

• Transitive property A
• Reflexive property B
• Trichotomy property C
• None of these D

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

0 (zero) is

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

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

• 
  A
• 1 B
• -1 C
• 
  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

6 is

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

• (a + b)c = a . c + bc A
• a + b = b + a B
• (a + b) + c = a + (b + c) C
• a(b+ c) = ab + ac D