Odd one out Practice Questions: Level 02

DIRECTIONS for questions 1-10: In each of following questions, four words have been given of which three are alike in some way and one is different. Choose the odd one out.
  1.  
    1. Dollar
    2. Peso
    3. Ounce
    4. Euro
  2.  
    1. Geometry
    2. Algebra
    3. Calculus
    4. Thermodynamics
  3.  
    1.Square
    2. Triangle
    3. Rectangle
    4. Cuboid
  4.  
    1. Fish
    2. Snake
    3. Crocodile
    4. Whale
  5.  
    1. Spoon
    2. Sword
    3. Knife
    4. Fork
  1.  
    1. M H Ansari
    2. Abdul Kalam
    3.Pranab Mukherjee
    4. Dr. Rajendra Prasad
  2.  
    1. A B Vajpayee
    2. Pratibha Patil
    3. Rajiv Gandhi
    4. Manmohan Singh
  3.  
    1. Copper
    2. Iron
    3. Iodine
    4. Tin
  4.  
    1. Unfaithfulness
    2. Loyalty
    3. Betrayal
    4. Infidelity
  5.  
    1. Cat
    2. Dog
    3. Fox
    4. Rabbit