chemical symbols universal abbreviations

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Variable valencies are used to indicate ions

Variable valencies are used to indicate ions
  • A. greater than +1
  • B. greater than −1
  • C. with more than one valency
  • D. all of these
  • Correct Answer: Option C

Formula of hydrated Sodium Carbonate is

Formula of hydrated Sodium Carbonate is
  • A. None
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option C

All are covalent compounds except

All are covalent compounds except
  • A. None
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option D

Valency of carbonate ion CO3? is

Valency of carbonate ion CO3? is
  • A. -1
  • B. -2
  • C. -3
  • D. -4
  • Correct Answer: Option A

All are ionic compounds except

All are ionic compounds except
  • A. AgCl
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option C