ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

There is no element common in

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

• Principle of equality of Fractions A
• Rule for product of fraction B
• Golden rule of fraction C
• Rule of quotient of Fraction D

• real number A
• complex number B
• rational number C
• irrational number D

• 0 A
• 1 B
• -1 C
• None of these D

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

∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

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

Name the property used in 4.1 + (-4.1) = 0

• Additive inverse A
• Multiplication inverse B
• Additive identity C
• Multiplication identity D

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

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

Zero is

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

2.333....is a

• Irrational no A
• Complex no B
• Rational no C
• None of these 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 value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

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

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

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

The multiplicative inverse of (a,b) is

• 
  A
• 
  B
• 
  C
• 
  D

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

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

(7,9) +(3,-5) =

• (4,4) A
• (10,4) B
• (9,-5) C
• (7,3) D

• 
  A
• 
  B
• 
  C
• 
  D

In (x +iy) y is called as

• Imaginary part A
• Complex number B
• Real part C
• None of above D

• 
  A
• 
  B
• 
  C
• 
  D

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

I is not

• Real number A
• Natural number B
• Prime Number C
• Whole Number D

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

6 is

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

• 1 A
• -i B
• i C
• 0 D

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