Temporary hardness can be removed by?

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• Word ‘Chemistry’ belongs to which language?
  • (A) English
  • (B) Japanese
  • (C) Spanish
  • (D) Greek
  ►Correct Option
  
  Correct Option is: D
  

• Group number represents?
  • (A) Same number of electron in valance shell
  • (B) Same number of electrons
  • (C) Same electronic configuration
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: A
  

• When a multidentate ligand is surrounded it is known as?
  • (A) Chelates
  • (B) Coorination complex
  • (C) Coordination complex
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: A
  

• Which individual units loose identity?
  • (A) Complex Salts
  • (B) Simple Salts
  • (C) Compound Salts
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: C
  

• Molten KCl conduct electricity because of?
  • (A) Free electrons
  • (B) Free neutrons
  • (C) Free ions
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: C
  

• Oxidation number of P in KH₂PO₂ is?
  • (A) +1
  • (B) +2
  • (C) +3
  • (D) +6
  ►Correct Option
  
  Correct Option is: A
  

• Order of reaction is?
  • (A) Can be determined from experiment.
  • (B) Can be determined from equation.
  • (C) Can not be determined from equation.
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: A
  

• Which catalyst is used in Fridel Craft Alkylation?
  • (A) AlBF
  • (B) AlCl₃
  • (C) BFCl₃
  • (D) None of the above
  ►Correct Option
  
  Correct Option is: B