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

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

• 1 A
• 3 B
• 2-i C
• -1 D

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

• a+a = 2a A
• a+a = 1 B
• a+a = 0 C
• None of these D

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

6 is

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

The square roots of negative numbers is called

• Real no A
• Complex no B
• Positive no C
• Negative no D

√11 is

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

∀ z ∈ C, multipliucative is

• (1,1) A
• (1,0) B
• (0,1) C
• None of these D

• 0 A
• 1 B
• -1 C
• 2 D

What is the conjugate of -6 -i?

• -6 +i A
• 6+i B
• -6 -i C
• 6 -i D

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

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

For each real number, there is a number which is its

• Negative A
• Possitive B
• Opposite C
• Similar 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

• 1 A
• -1 B
• 
  C
• 
  D

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

Name the property used in a (b-c) = ab - ac

• commutative property of multiplication A
• distributive property of multiplication B
• associative property of multiplication C
• multiplicative inverse D

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

Any recurring decimal represents a

• Irrational no A
• Integer B
• Rational no C
• None of these D

• 1 A
• -i B
• i C
• 0 D

1.4142135... is ______

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

The equation |x + 4| = x has solution

• x = -2 A
• x = 2 B
• x = -4 C
• x = 4 D

Total number of subsets that can be formed out of the set {a,b,c} is

• 1 A
• 4 B
• 8 C
• 12 D

π is ______

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

Rational number is a number which can be written as a terminating decimal fraction or a

• Non-terminating decimal fraction A
• Non-recurring B
• Recurring decimal fraction C
• a, b and c D

Every irrational number is

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

i =

• 
  A
• 
  B
• 
  C
• 
  D