VM – 402:WR: Number

Answers :

  1. sisters-in – law (compound nouns take the plural on the principle word)
  2. criteria
  3. software (the plural and the singular form of this word is the same)
  4. spectacles (this word is used only in the plural form)
  5. dozen (the singular and plural form of the word is the same)
  6. indices
  7. arms (the plural of arm that is arms also means weaponry)
  8. advice (abstract nouns do not take a plural form)
  9. furniture (being a collective noun it does not have a plural form)
  10. chalk (being an uncountable noun there is no plural for this word ; though we can use pieces of chalk)