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

The√ is used for the

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

• 1 A
• i B
• -1 C
• -i D

• Additive property of inequality A
• Commutative property B
• Additive inverse C
• Additive identity D

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

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

π is the ration of

• Area of a circle to its diameter A
• Area of a circle to its radius B
• Circumference of a circle to its diameter C
• Circumference of circle to its radius D

• 
  A
• 1 B
• 
  C
• -1 D

• 
  A
• 
  B
• 
  C
• 
  D

QUQ'

• 
  A
• 
  B
• 
  C
• 
  D

• N A
• r B
• 2r C
• π 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 conjugate of √5 i is

• √5 A
• -√5 i B
• i C
• 5i D

The order axioms are satisfied by set of

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

• 
  A
• 
  B
• 
  C
• 
  D

2.333....is a

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

The identity element with respect to subtraction is

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

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

Q∪ Q' =

• Q A
• Q' B
• N C
• R 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 negative square root of 9 can be written as:

• -√9 A
• √9 B
• √18 C
• -√18 D

6 is

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

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

In polar form of complex number r =

• 
  A
• 
  B
• 
  C
• 
  D

3.5+5.4=5.4+3.5 =8.9 this property of addition is called

• additive identity A
• assoclative property B
• commulative property C
• closure property D

√(-1b) =?

• b i A
• -i b B
• b2 C
• i√b D