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

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

• √3 i A
• √7 B
• -2-i C
• √5 D

• 
  A
• 
  B
• 
  C
• 
  D

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

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

• 
  A
• 
  B
• 
  C
• None of these D

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

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

• 
  A
• 
  B
• 
  C
• 
  D
• 
  E

a >b, b >c ⇒a >c is a

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

• 1 A
• -i B
• i C
• 0 D

Name the property used in 4.1 + (-4.1) = 0

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

• 0 A
• 1 B
• -1 C
• None of these D

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

Any recurring decimal represents a

• Irrational no A
• Integer B
• Rational no C
• None of these D

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

Every real number is

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

Name the property used in 4 + 9 = 9 + 4

• Associative property of addition A
• Commutative property of addition B
• Distributive property 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

∀a,b ε R, ab = be is a

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

• Reflexive property A
• Symmetric property B
• Cancellations property w.r.t. addition C
• Transitive property D

∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is

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

• Associative property of addition A
• Commutative property of addition B
• Distributive property C
• Additive identity D

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

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

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

The order axioms are satisfied by set of

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

If in a set of real no a is additive identity then

• a+a = 2a A
• a+a = 1 B
• a+a = 0 C
• None of these D

0 (zero) is

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

• 
  A
• 
  B
• 
  C
• 
  D

(a +bi) -c (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

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

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

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