ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 1 (Number System)

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

• 
  A
• 
  B
• 
  C
• 
  D

• 1 A
• 3 B
• 2-i C
• -1 D

• 
  A
• 
  B
• 
  C
• 
  D

Associative law of multiplication

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

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

• 
  A
• 1 B
• -1 C
• 
  D

The symbol of irrational is

• W A
• N B
• Q C
• Q' D

• 
  A
• 
  B
• 
  C
• 
  D

If 4 > b or a < b than a = b is a

• Additive property A
• Transitive property B
• Trichotomy property of inequality C
• None of above D

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

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

The square root of every incomplete square is an

• Rational numbers A
• Even numbers B
• odd numbers C
• Irrational numbers D

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

∀a,b,c∈R and c>0,then

• a>b ⇒ ac < bc A
• a>b ⇒ ac > bc B
• a<b ⇒ ac > bc C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

• Closure law of addition A
• Associative law of addition B
• Commutative law of multiplication C
• Associative law of multiplication D

• -8 A
• 8 B
• 8i C
• 32 D

1/3 is ______

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

Every prime number is also

• Rational number A
• Even number B
• Irrational number C
• Multiple of two numbers D

∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

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

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

• One A
• Two B
• Three C
• Four D

The multiplicative inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

√x = ______ if is a prime number

• Rational no A
• Natural no B
• Irrational no C
• Complex no D

For each real number, there is a number which is its

• Negative A
• Possitive B
• Opposite C
• Similar D

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist 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

In R, the additive identity is

• 0 A
• 1 B
• -1 C
• None D