Everyday Science MCQs Health Department NTS Past Papers Operation Theatre Technician (OTT) Surgical Technician

Which of the following cannot conduct electricity?

  • NaCl (Solid)
  • NaCl (Molten)
  • NaCl (Aqueous)
  • Both B & C
  • a
  • In NaCl, Ions are fixed in place or in solid form and cannot move.
    In NaCl (Molten / Melted), Ions are free to move and electricity can flow.
    NaCl (Aqueous / dissolved in water), Na and Cl can dissolved in water and can carry current.

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Chemistry MCQs Health Department NTS Past Papers Operation Theatre Technician (OTT) Surgical Technician

The molar volume of CO2 gas is 22.4 dm3 at:

  • 25 C and 2 atm
  • 0 K and 1 atm
  • 25 K and 0.5 atm
  • 0 C and 1 atm
  • d
  • 1ATM (atmosphere) is a normal air pressure at sea level.
    1ATM is equal to 760 Torr.
    In simple words atm is unit of Pressure.
    The space (volume) that 1 mole of a gas takes is called molar volume.

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