ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

• 
  A
• 
  B
• 
  C
• 
  D

• Associative property of addition A
• Commutative property of addition B
• Distributive property C
• Additive identity 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

If in a set of real no a is multiplicative identity then

• a,a = a² A
• a,a = 1 B
• a,a = 0 C
• None of these D

• 
  A
• 1 B
• -1 C
• 
  D

The square root of every incomplete square is an

• Rational numbers A
• Even numbers B
• odd numbers C
• Irrational numbers D

(7,9) +(3,-5) =

• (4,4) A
• (10,4) B
• (9,-5) C
• (7,3) D

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

• (x, y) A
• (kx, y) B
• (x, ky) C
• (kx, ky) 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

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

√25 is a number

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

1/3 is ______

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

i¹⁰¹ =

• i A
• i² B
• -i C
• -1 D

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

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

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

6 is

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

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

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

It is not possible to find the exact value of

• π A
• √9 B
• ∛27 C
• √1 D

• N A
• r B
• 2r C
• π D

• x A
• 
  B
• y C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

The set of natural no. is closed under

• multiplication A
• subtraction B
• difference C
• division 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

If z₁ = 1 + 2i, z₂ = 3 + 4i then

• z₁ > z₂ A
• z₁ = z₂ B
• z₁ < z₂ C
• None of these D