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

Every prime number is also

• Rational number A
• Even number B
• Irrational number C
• Multiple of two numbers D

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

• Associative law of addition A
• Commutative law of addition B
• Additive identity C
• Closure law of addition 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

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

0 (zero) is

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

202.04 is an example of

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

Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.

• Fractinal numbers A
• Rational Numbers B
• Even Numbers C
• Whole Numbers D

√11 is

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

∀a,b, c ε R ac = bc ⇒ a = b, c ≠ 0 is a

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

• 1 A
• -i B
• i C
• 0 D

• Commutative law of addition A
• Associative law of addition B
• Additive identity C
• Additive inverse D

• 
  A
• 
  B
• 
  C
• 
  D

Every whole number is

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

In R, the multiplicative identity is

• 0 A
• 1 B
• -1 C
• None D

3/4 is ______

• An odd number A
• An even number B
• A natural number C
• A rational number D

• 
  A
• 
  B
• 
  C
• 
  D

In R the number of identity element w.r.t '+' is

• One A
• Two B
• Three C
• Four D

The value of x, and y, when (x + iy)²= 5 + 4i

• X = 2, y = 1 A
• X = -2, y = 1 B
• X = 2, y = -1 C
• X = 2, y = 2 D

• 
  A
• 
  B
• 
  C
• 
  D

Q∪ Q' =

• Q A
• Q' B
• N C
• R D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

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

If a > b or a < b than a = b is a

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

Additive inverse of - a - b is

• a A
• -a + b B
• a - b C
• a + b D

1/3 is a decimal

• Recurring A
• Terminating B
• Non-terminating C
• None of the above D

Associative law of multiplication

• ab = ba A
• a(bc) = (ab) c B
• a(b+c) = ab + ac C
• (a + b)c = ac + bc D