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

• Commutative law of addition A
• Associative law of addition B
• Additive identity C
• Additive inverse 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 irrational number is

• A real number A
• A prime number B
• A natural number C
• An integer D

i¹⁰¹ =

• i A
• i² B
• -i C
• -1 D

6 is

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

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

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

1/3 is a decimal

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

The decimal fraction in which we have finite number of digits in its decimal part is called.

• recurring decimal fraction A
• Non terminating faction B
• Non recurring fraction C
• terminating decimal fraction D

• 
  A
• 
  B
• 
  C
• 
  D

The property used in -3 <-2 ⇒0 <1

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

If z=(x,y) then z has no multiplicative inverse when

• x ≠ 0, y = 0 A
• x = 0, y = 0 B
• x = 0, y ≠ 0 C
• None of these D

(a,0) x (c,0) =

• (0,ac) A
• (ac,0) B
• (0,0) C
• (a,c) D

• 
  A
• 1 B
• -1 C
• 
  D

√(-1b) =?

• b i A
• -i b B
• b2 C
• i√b D

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

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

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

The order axioms are satisfied by set of

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

i¹⁰¹=

• i A
• i² B
• -i C
• -1 D

i =

• 
  A
• 
  B
• 
  C
• 
  D

Union of the sets of rational and irrational numbers is called 6th set of

• Natural numbers A
• Real numbers B
• Whole numbers C
• Prime numbers D

∀x,y∈R and x> 0 , y>0, if x > y

• 
  A
• 
  B
• 
  C
• None of these D

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

(7,9) +(3,-5) =

• (4,4) A
• (10,4) B
• (9,-5) C
• (7,3) D

If a set S contains n elements then P (S) has ........ number of elements

• 2ⁿ A
• 2ⁿ² B
• 2.n C
• n² D

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

• 
  A
• 
  B
• 
  C
• 
  D

√-1 b=

• b A
• 2 B
• 2b C
• None of these D