ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

Every irrational number is

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

i³ =

• -1 A
• i B
• -i C
• 1 D

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

The√ is used for the

• Positive square root A
• Negative square root B
• +ve and -ve square root C
• Whole number D

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

Gooch crucible is made of :

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

• 
  A
• 
  B
• 
  C
• 
  D

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

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

For any real numbers x,y,xy=o ⇒

• x ≠ 0 ∧ y ≠ 0 A
• x = 0 ∨ y = 0 B
• x = 0 C
• y = 0 D

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

√23 is

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

If a set S contains n elements then P (S) has ........ number of elements

• 2ⁿ A
• 2ⁿ² B
• 2.n C
• n² D

a >b, b >c ⇒a >c is a

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

Multiplicative inverse of "1" is

• 0 A
• ±1 B
• 1 C
• {0,1} D

6 is

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

The set of natural no. is closed under

• multiplication A
• subtraction B
• difference C
• division D

• 0 A
• 1 B
• -1 C
• None of these D

(a-1)-1 =

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

• 
  A
• 1 B
• -1 C
• 
  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 = -i C
• x = 2, y = 2 D

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

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

3/2 is

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

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

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

Name the property used in 4 + 9 = 9 + 4

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

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D