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

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

What is the conjugate of -7 -2i?

• -7 + 2i A
• 7 + 2i B
• 7 -2i C
• None of these D

√23 is

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

Gooch crucible is made of :

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

• 
  A
• 
  B
• 
  C
• 
  D

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

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

a >b ⇒a +c >b +c is known as

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

• -3 -2i A
• 3 +2i B
• 1 + 2i C
• 1 - 2i D

Which of the following sets has closure property w.r.t. addition

• { 0 } A
• { 1 } B
• { 0, -1} C
• { 1, -1} D

(a^-1)^-1=

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

• 
  A
• 1 B
• -1 C
• 
  D

• N A
• r B
• 2r C
• π D

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

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

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

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

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

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

√11 is

• an irrational number A
• Rational number B
• odd number C
• Negative number D

The equation |x + 4| = x has solution

• x = -2 A
• x = 2 B
• x = -4 C
• x = 4 D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

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

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

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

In R, the additive identity is

• 0 A
• 1 B
• -1 C
• None D

The square root of 2i - 20i is

• +-(5 - 2i) A
• +-(5 + 2i) B
• (5 - 2i) C
• None of these D

The multiplicative inverse of (a,b) is

• 
  A
• 
  B
• 
  C
• 
  D

In (x +iy) y is called as

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

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