ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

In (x +iy) y is called as

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

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

There is no element common in

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

0.25 is ______

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

Every irrational number is

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

• Principle of equality of fractions A
• Rule for product of fraction B
• Rule for quotient of fraction C

• z is purely imaginary A
• a is any complex number B
• z is real C
• None of these D

The additive identity of real number is

• 1 A
• 2 B
• 1/2 C
• 0 D

Name the property used in 1000 x 1 = 1000

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

The set of positive integers, 0 and negative integers is known as the set of

• Natural numbers A
• Rational numbers B
• All integers C
• Irrational numbers D

If a is any real number and a = a is called

• symmetric property A
• Trichotomy Properties B
• Transitive Property C
• Reflexive Properties D

The identity element with respect to subtraction is

• 0 A
• -1 B
• 0 and 1 C
• None of thes D

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

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

• 
  A
• 
  B
• 
  C
• 
  D

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

In (x + iy), y is called as

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

A non-terminating non_recurring decimal represents an

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

∀x,y∈R and x> 0 , y>0, if x > y

• 
  A
• 
  B
• 
  C
• None of these D

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

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

• 
  A
• 
  B
• 
  C
• 
  D

a.a^-1 = a^-1.a = 1 is a

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

i³=

• -1 A
• i B
• -i C
• 1 D

∀x, y ∈ R, either x = y or x > y or x < y is

• Transitive property A
• Reflexive property B
• Trichotomy property C
• None of these D

If P is a whole number greater than 1, which has only P and I are factors. Then P is called

• Wholw number A
• Prime number B
• Even number C
• Odd number D

1/3 is ______

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

Every whole number is

• A real number A
• An irrational number B
• A prime number C
• A negative integer D

• 
  A
• 
  B
• 
  C
• 
  D
• 
  E

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

• 
  A
• 
  B
• 
  C
• None of these D

i³ =

• -1 A
• i B
• -i C
• 1 D