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

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

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

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

The decimal fraction in which we have finite number of digits in its decimal part is called.

• recurring decimal fraction A
• Non terminating faction B
• Non recurring fraction C
• terminating decimal fraction D

In R the right cancellation property w.r.t. addition is

• 
  A
• 
  B
• 
  C
• 
  D

If a is any real number and a = a is called

• symmetric property A
• Trichotomy Properties B
• Transitive Property C
• Reflexive Properties D

• 
  A
• 
  B
• 
  C
• 
  D

• -8 A
• 8 B
• 8i C
• 32 D

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

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

Every real number is

• a positive integer A
• a rational number B
• a negative integer C
• a complex number D

QUQ, =

• N A
• R B
• W C
• Z D

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

• One A
• Two B
• Three C
• Four D

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

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

Some of two real numbers is also a real number , this property is called:

• Commutative property w.r.t addition A
• Closure property w.r.t. addition B
• Associative property w.r.t. addition C
• Distributive property w.r.t addition D

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

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

The set {1, 2, 3, 4, ....} is called

• Set of Natural numbers A
• Set of whole numbers B
• Set of rational number C
• Set of irrational numbers D

2.333....is a

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

• (a + b)c = a . c + bc A
• a + b = b + a B
• (a + b) + c = a + (b + c) C
• a(b+ c) = ab + ac D

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

The square root of 2i - 20i is

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

Every prime number is also

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

The order axioms are satisfied by set of

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

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

Every real number is

• A complex number A
• A rational number B
• A natural number C
• A prime number D

The additive inverse of 2/3 is

• 3/2 A
• -2/3 B
• -3/2 C
• 0 D

4/√49 is a

• Irrational Number A
• Prime Number B
• Rational number C
• Whole number D

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

• 
  A
• 
  B
• 
  C
• 
  D