CBSE  /  Class 11  /  Chemistry  /  The s-Block Elements

  • 1. 
    The hydration energy of Mg

  • A1
  • Na
  • Be
  • Mg

  • 2. 
    Milk of lime reacts with chlorine to form ________, a constituent of bleaching powder.

  • Ca(OCI)
  • Ca(CIO)
  • Ca(CIO)
  • Ca(CIO)

  • 3. 
    What happens when Calcium carbonate is heated to 1200 K?

  • Carbon Monoxide
  • Calcium hydroxide
  • Calcium Oxide
  • Both (2) and (3) are correct

  • 4. 
    The salt that is added to table salt to make it flow freely in rainy season is

  • KCl
  • KI
  • Ca(PO)
  • NaPO

  • 5. 
    CsOH is

  • Strongly basic
  • Weakly basic
  • Slightly acidic
  • Amphoteric.

  • 6. 
    Which of the following metals is not manufactured by electrolysis?

  • Na
  • Mg
  • Al
  • Fe

  • 7. 
    The wire of flash bulb is made up of:

  • Mg
  • Ag
  • Cu
  • Ba
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