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

A prime number can be a factor of a square only if it occurs in the square at least

• Once A
• Thirce B
• Twice C
• None of these D

(a+bi) - (c+di)=

• (a+b) = (c+d) A
• (a+c) + i(b+d) B
• (a - c) + (c- d)i C
• (a - c)+ (b - d)i D

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

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

In (x + iy), y is called as

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

If P is a whole number greater than 1, which has only P and I are factors. Then P is called

• Wholw number A
• Prime number B
• Even number C
• Odd number D

• Commutative law of multiplication A
• Closure law of multiplication B
• Associative law of multiplication C
• Multiplication identity D

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

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

• 
  A
• 
  B
• 
  C
• 
  D
• 
  E

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

If Z₁ = 1+ i, Z₂ = 2+3i , then |Z₁ -Z₂| =?

• √5 A
• √7 B
• -1-2i C
• √3 D

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

3/4 is ______

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

(a-1)-1 =

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

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

• 
  A
• 
  B
• 
  C
• 
  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

• 0 A
• 1 B
• -1 C
• None of these D

Every whole number is

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

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

The set {0,-1} hold closure property under

• Addition A
• Both a & c B
• Multiplication C
• None of these D