11th Class ICS Mathematics Chapter 1 Test Online

Modulus of 15 i + 20 is:

• 20 A
• 15 B
• 25 C
• none of the above D

• a + c = b + d A
• a + b = c + d B
• a - b = c - d C
• None of these D

The ordered pairs (2, 5) and (5, 2) are:

• not equal A
• equal B
• disjoint C
• empty D

The identity element with respect to addition is:

• 0 A
• 1 B
• -1 C
• 0 and 1 D

Which of the following is correct:

• 2 + 7i > 10 + i A
• 1 + i > 1 - i B
• 4 + 3i > 1 + 3i C
• none of these D

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

The real part of the complex number a + bi is:

• b A
• -b B
• a C
• -a D

• additive property A
• multiplicative inverseproperty B
• transitive property C
• negative property D

The multiplicative identity of real numbers is:

• 0 A
• 1 B
• 2 C
• -1 D

If z₁ = 4i and z₂ = 3 - 9i, then z₁ + z₂ =

• 3 - 5i A
• 3i - 5 B
• 7 - 9i C
• 3 + 5i D

• 
  A
• 
  B
• 
  C
• 
  D

• i A
• 0 B
• 
  C
• 
  D

Factors of x² + y² are:

• (x + iy) (x - iy) A
• (x + y) (x - y) B
• (x + y) (x + y) C
• none D

• real numbers A
• complexnumbers B
• primenumbers C
• oddnumbers D

• closure property w.r.t multiplication A
• commutativeproperty w.r.t multiplication B
• associativeproperty w.r.t multiplication C
• trichotomy property D

Division of a natural number by another natural number gives:

• always a natural number A
• always an integer B
• always a rationalnumber C
• always an irrational number D

• 
  A
• 
  B
• 
  C
• 
  D

Rational numbers are:

• repeating decimals A
• terminatingdecimals B
• periodicdecimals C
• all of these D

The additive inverse of a real number is a:

• 0 A
• -a B
• a C
• 
  D

The imaginary part of the complex number a + bi is:

• a A
• b B
• bi C
• none of these D