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

• a = a A
• a < a B
• a > a C
• a²= a D

• 15 A
• 15 i B
• -15 i C
• -15 D

1.4142135... is ______

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

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

• 
  A
• 
  B
• 
  C
• 
  D
• 
  E

The identity element with respect to subtraction is

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

• 
  A
• 
  B
• 
  C
• 
  D

Any recurring decimal represents a

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

• 
  A
• 
  B
• 
  C
• 
  D

i³ =

• -1 A
• i B
• -i C
• 1 D

√-1 b=

• b A
• 2 B
• 2b C
• None of these D

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

• 
  A
• 
  B
• 
  C
• 
  D

I is not

• Real number A
• Natural number B
• Prime Number C
• Whole Number D

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

2.333....is a

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

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

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

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

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

• 
  A
• 
  B
• 
  C
• 
  D

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 non-terminating, non-recurring decimal represent

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

Every real number is

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

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

√x = ______ if is a prime number

• Rational no A
• Natural no B
• Irrational no C
• Complex no D

In R, the multiplicative identity is

• 0 A
• 1 B
• -1 C
• None D

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• Associate law of addition A
• Commutative law of addition B
• Additive identity C
• Closure law of addition D

• 
  A
• 
  B
• 
  C
• 
  D