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

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

The order axioms are satisfied by set of

• C A
• C and R B
• R C
• None of these D

If 0 = R, thenthe additive inverse of a is

• 1/9 A
• ^1/-9 B
• a C
• -a D

In R the number of identity elements w.r.t.'.' is

• One A
• Two B
• Three C
• Four D

Multiplicative inverse of "1" is

• 0 A
• ±1 B
• 1 C
• {0,1} D

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

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

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

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

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

202.04 is an example of

• Recurring decimals A
• Non-recurring decimals B
• Terminating decimals C
• None of above D

i² =

• 1 A
• 2 B
• -1 C
• 0 D

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

Name the property used in 4 x (5 x 8) = ( 4 x 5) x 8

• Associative property of addition A
• Associative property of multiplication B
• Additive identity C
• Multiplicative identity D

If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

• (ac,bd) A
• (ac+bd, ad-bc) B
• (ac-bd , ad+bc) C
• (ac-bd , ad-bc) D

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

A non-terminating, non-recurring decimal represent

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

There is no element common in

• N and W A
• E and W B
• N and O C
• Q and Q' D

• 
  A
• 
  B
• 
  C
• 
  D

The identity element with respect to subtraction is

• 0 A
• -1 B
• 0 and 1 C
• None of thes D

6 is

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

QUQ, =

• N A
• R B
• W C
• Z D

∀ z ∈ C, multipliucative is

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

If Z₁= 1 + i, Z₂= 2+3i, then |Z₁- Z₂| = ?

• 
  A
• 
  B
• 
  C
• 
  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

The set of natural no. is closed under

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

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

• Associate law of addition A
• Commutative law of addition B
• Additive identity C
• Closure law of addition 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

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

• 
  A
• 
  B
• 
  C
• 
  D