ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

• associative property w.r.t addition A
• commutative property B
• Closure property w.r.t addition C
• Additive identity D

1/3 is ______

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

a >b, b >c ⇒a >c is a

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

• 
  A
• 
  B
• 
  C
• 
  D

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

1.4142135... is ______

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

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

The additive inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist D

The set { 1 , -1} is closed w.r.t.

• Addition A
• Multiplications B
• Subtraction C
• None of these D

Every real number is

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

In polar form of complex number r =

• 
  A
• 
  B
• 
  C
• 
  D

In R the left cancellation property w.r.t addition is

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

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

i¹⁰¹=

• i A
• i² B
• -i C
• -1 D

• Commutative property of addition A
• Closure property of addition B
• Additive inverse C
• Associative property w.r.t. to addition D

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

∀a,b, c ε R,a +c = b + c = > a = b

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

The multiplicative inverse of 4 is

• -4 A
• -1/4 B
• 1/4 C
• 1 D

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

√-1 b=

• b A
• 2 B
• 2b C
• None of these D

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

• 1 A
• 3 B
• 2-i C
• -1 D

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

• 
  A
• 
  B
• 
  C
• 
  D

4/√49 is a

• Irrational Number A
• Prime Number B
• Rational number C
• Whole number D

Q∪ Q' =

• Q A
• Q' B
• N C
• R 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