ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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

• Negative A
• Possitive B
• Opposite C
• Similar D

The square root of 2i - 20i is

• +-(5 - 2i) A
• +-(5 + 2i) B
• (5 - 2i) C
• None of these D

• -8 A
• 8 B
• 8i C
• 32 D

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

• Associative 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

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

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

The identity element with respect to subtraction is

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

• -3 -2i A
• 3 +2i B
• 1 + 2i C
• 1 - 2i D

QUQ'

• 
  A
• 
  B
• 
  C
• 
  D

The set {0,-1} hold closure property under

• Addition A
• Both a & c B
• Multiplication C
• None of these D

• 0 A
• 1 B
• -1 C
• None of these D

Every recurring decimal represents

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

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

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

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

π is ______

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

• Symmetric property A
• Cancellation property w.r.t. multiplication B
• Reflexive property C
• Transitive property D

The additive inverse of 2/3 is

• 3/2 A
• -2/3 B
• -3/2 C
• 0 D

(a+bi) - (c+di)=

• (a+b) = (c+d) A
• (a+c) + i(b+d) B
• (a - c) + (c- d)i C
• (a - c)+ (b - d)i D

A non-terminating, non-recurring decimal represent

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

The multiplicative inverse of 1 - 2i is

• 
  A
• 
  B
• 
  C
• 
  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

a >b ⇒a +c >b +c is known as

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

6 is

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

• real part of z A
• imaginary part of z B
• conjugate of z C
• modulus of z D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

Any recurring decimal represents a

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