Grade 8 Crossword puzzle

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Across
  1. 2. Disease causing Microbes.
  2. 4. A closed shape made up of line segments.
  3. 8. Without plan or order
  4. 10. Inverse of division.
  5. 12. Quadrilateral with nine sides.
  6. 13. The gas required for combustion.
  7. 14. The state does not officially promote any one religion as the state religion.
  8. 16. A push or pull acting on an object.
  9. 17. Right ensures that all persons are equal before the law.
  10. 19. A quadrilateral with pair of parallel sides.
  11. 20. The number of times a particular observation occurs in a given data.
Down
  1. 1. Take violent action against a ruler
  2. 3. An organism too small to see with our naked eye.
  3. 5. Type of friction acting between two bodies at rest.
  4. 6. Sudden fall of a mass of earth down the side of the mountain.
  5. 7. Female singer who sang partiotic songs in many Language.
  6. 9. "Never Borrow, Never Lend" is the principle of
  7. 11. Han's favourite writer
  8. 15. The Tiger of Mysore.
  9. 18. Exclusive right over any idea or invention.