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

• Symmetric property A
• Cancellation property w.r.t. multiplication B
• Reflexive property C
• Transitive property D

202.04 is an example of

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

In R, the multiplicative inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

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

(a-1)-1 =

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

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

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

If z₁ =√-36 ,z₂ =√-25,z3 =√-16 then

• 15 A
• 15i B
• -15i C
• -15 D

∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

a >b ⇒a +c >b +c is known as

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

The additive identity of real number is

• 1 A
• 2 B
• 1/2 C
• 0 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

There is no element common in

• N and W A
• E and W B
• N and O C
• Q and Q' D

i³=

• -1 A
• i B
• -i C
• 1 D

In R, the additive inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

Gooch crucible is made of :

• Brass. A
• Porcelain. B
• Bronze. C
• Gold. D

The conjugate of √5 i is

• √5 A
• -√5 i B
• i C
• 5i D

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

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

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

In R, the additive identity is

• 0 A
• 1 B
• -1 C
• None D

• A rational number A
• A irrational number B
• An even integer C
• A factor of 36 D

The additive inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

• 1 A
• -1 B
• 
  C
• 
  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

The identity element with respect to subtraction is

• 0 A
• 1 B
• -1 C
• Does not exist D

√2 is a number

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

Multiplicative inverse of "1" is

• 0 A
• ±1 B
• 1 C
• {0,1} D

QUQ'

• 
  A
• 
  B
• 
  C
• 
  D