ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

The symbol of irrational is

• W A
• N B
• Q C
• Q' D

What is the conjugate of -6 -i

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

• Symmetric property A
• Cancellation property w.r.t. multiplication B
• Reflexive property C
• Transitive property D

Every natural number is

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

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

The property used in -3 <-2 ⇒0 <1

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

• 
  A
• 
  B
• 
  C
• 
  D

∀x,y∈ R and x < 0, y < 0, which one is true 

• xy < o A
• xy = o B
• xy > o C
• None of these D

Name the property used in 100 + 0 = 100

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

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

a >b ⇒a +c >b +c is known as

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

(a^-1)^-1=

• a^-1 A
• a B
• -a C
• None of above 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

Every real number is

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

• 
  A
• 1 B
• -1 C
• 
  D

If ∀a,b ε R,then a +b  ε  R is a property

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

• N A
• r B
• 2r C
• π D

In set builder notation the set {0,1,2,........100} can be written as

• {x / xε B ∧ x ≤ 100} A
• {x / x ∈ W ∧ x < 101} B
• {x / x ∈ Z ∧ x < 101} C
• The set of first 100 whole numbers D

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

• 0 A
• 1 B
• -1 C
• None of these D

In R, the additive identity is

• 0 A
• 1 B
• -1 C
• None D

The square roots of negative numbers is called

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

Additive inverse of - a - b is

• a A
• -a + b B
• a - b C
• a + b D

The additive inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

QUQ, =

• N A
• R B
• W C
• Z 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

Zero is

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

1/3 is a decimal

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