ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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

1/3 is ______

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

• are real no A
• both are not real B
• are imaginary no C
• both are imaginary D

√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 A
• -i B
• i C
• 0 D

i¹⁰¹=

• i A
• i² B
• -i C
• -1 D

The multiplicative inverse of 1 is

• 1 A
• -1 B
• 0 C
• Does not exist 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

• Additive property in R A
• Multiplication property in R B
• Cancellation property in R C
• Distribution property in R D

A non-terminating non_recurring decimal represents an

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

In R, the additive identity is

• 0 A
• 1 B
• -1 C
• None D

√(-1b) =?

• b i A
• -i b B
• b2 C
• i√b D

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

The√ is used for the

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

2.333....is a

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

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

π is ______

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

• a = a A
• a < a B
• a > a C
• a²= a D

202.04 is an example of

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

• 
  A
• 
  B
• 
  C
• 
  D
• 
  E

Additive inverse of - a - b is

• a A
• -a + b B
• a - b C
• a + b D

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

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

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

In R, the multiplicative identity is

• 0 A
• 1 B
• -1 C
• None 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 complex number A
• A rational number B
• A natural number C
• An irrational number D

Which of the following sets has closure property w.r.t. addition

• { 0 } A
• { 1 } B
• { 0, -1} C
• { 1, -1} D

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

3/4 is ______

• An odd number A
• An even number B
• A natural number C
• A rational number D

• additive property A
• multiplicative property B
• additive identity C
• multiplicative identity D