Class XI

Chemical substances speeding up rate of chemical reaction is called as
  1. Pressure
  2. Concentration
  3. Catalysts
  4. Inhibitors
Ionic compounds conduct electricity
  1. When dissolved in water
  2. When in molten form
  3. When in gaseous form
  4. Both A and B
 When neutral, indicators show
  1. Red color
  2. Blue color
  3. Yellow/green color
  4. Pink color
 Solvents of covalent compounds include all but
  1. alcohol
  2. water
  3. petrol
  4. tetra chloromethane
Purpose of a voltmeter is to
  1. Ensure constant flow of electricity
  2. Measure amount of current
  3. Measure voltage of cells and batteries
  4. Help bulbs to glow
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