ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

If a > b or a < b than a = b is a

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

The additive inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

Name the property used in 4 + 9 = 9 + 4

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

• 
  A
• 
  B
• 
  C
• 
  D

√(-1b) =?

• b i A
• -i b B
• b2 C
• i√b D

3/4 is ______

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

The equation |x + 4| = x has solution

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

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

• 1 A
• 4 B
• 8 C
• 12 D

In R, the additive inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

Zero is

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

a >b ⇒a +c >b +c is known as

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

• Principle of equality of fractions A
• Rule for product of fractions B
• Golden rule for fractions C
• Rule for quotient of fractions D

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

(a^-1)^-1=

• a^-1 A
• a B
• -a C
• None of above D

The real number system contains.

• Positive Numbers A
• Negative numbers B
• Zero C
• (option a, b and c) D

• 
  A
• 
  B
• 
  C
• 
  D

• Principle of equality of fractions A
• Rule for product of fractions B
• Golden rule of fractions C
• Rule for quotient of fractions D

In R, the multiplicative inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

Any whole number can be written as a product of factors which are

• Odd numbers A
• Prime number B
• Rational number C
• Even number D

Every prime number is also

• Rational number A
• Even number B
• Irrational number C
• Multiple of two numbers D

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

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

The multiplicative inverse of -3i is

• 3i A
• -3i B
• -1/3i C
• 1/3 i D

A prime number can be a factor of a square only if it occurs in the square at least

• Once A
• Thirce B
• Twice C
• None of these D

• 0 A
• 1 B
• -1 C
• None of these D

i^-(4n+2) = -------------------------------

• 1 A
• i B
• -1 C
• -i D

In R, the multiplicative identity is

• 0 A
• 1 B
• -1 C
• None 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 b=

• b A
• 2 B
• 2b C
• None of these D