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

202.04 is an example of

• Recurring decimals A
• Non-recurring decimals B
• Terminating decimals C
• None of these D

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

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

If a and b are real numbers then a+b is also real number this law is called

• associative law of addition A
• closure law of addition B
• Distributive law of addition C
• Commutative law of addition D

• Additive property in R A
• Multiplication property in R B
• Cancellation property in R C
• Distribution property in R D

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

• One A
• Two B
• Three C
• Four D

(a, b) + (-a, -b) =

• (0,0) A
• (a, b) B
• (-a, -b) C
• (1, 1) D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

(√3+√5)+√7 = √3 +(√5 +√7) property used in above is

• Commutative property of addition A
• Closure property of addition B
• Additive inverse C
• Associative property w.r.t to adition D

The square root of every incomplete square is an

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

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

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

The multiplicative inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

The set of natural no. is closed under

• multiplication A
• subtraction B
• difference C
• division D

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

A non-terminating non_recurring decimal represents an

• Irrational no A
• Both a & c B
• Rational no C
• None of these 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

The square roots of negative numbers is called

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

The identity element with respect to subtraction is

• 0 A
• 1 B
• -1 C
• Does not exist D

• 
  A
• 1 B
• 
  C
• -1 D

The polar form of complex number x ≠ I y =

• r cos θ+ r sin θ A
• r cos θ+ is sin θ B
• cos θ+ r sin θ C
• i cos θ+ i sin θ D

i =

• 
  A
• 
  B
• 
  C
• 
  D

0 (zero) is

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

• 
  A
• 
  B
• 
  C
• 
  D

Every natural number is

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

Every recurring decimal represents

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