ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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

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

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

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

Additive inverse of - a - b is

• a A
• -a + b B
• a - b C
• a + b D

• 15 A
• 15 i B
• -15 i C
• -15 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
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

Every real number is

• a positive integer A
• a rational number B
• a negative integer C
• a complex number D

If z₁ = 1 + 2i, z₂ = 3 + 4i then

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

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

A non-terminating non_recurring decimal represents an

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

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

6 is

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

24 can be written as a product of

• Odd factors A
• Even factors B
• Whole factors C
• Prime factors D

0 (zero) is

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

π is ______

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

Which of the following has the same value as i¹¹³?

• i A
• -1 B
• -i C
• 1 D

• 
  A
• 
  B
• 
  C
• 
  D

Every natural number is

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

(a +bi) -c (c +di) =

• (a +b) = (c +d) A
• (a +c) + i(b +d) B
• (a -c) + (c -d)i C
• (a -c) +(b -d) i D

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

• 
  A
• 
  B
• 
  C
• 
  D

The decimal fraction in which we have finite number of digits in its decimal part is called.

• recurring decimal fraction A
• Non terminating faction B
• Non recurring fraction C
• terminating decimal fraction D

i¹⁰¹=

• i A
• i² B
• -i C
• -1 D

1/3 is ______

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

• Additive property of inequality A
• Commutative property B
• Additive inverse C
• Additive identity D

∀a,b ε R, ab = be is a

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

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D