Other questions in this quiz

2. Which of these is the wrong answer?

  • Crackers=stiff but brittle
  • House Brick=stiff,strong in tension and compression
  • Custard=soft,flexible,weak
  • Metal tools= stiff,strong in tension and compression

3. True or False: Copper Dioxide +Acid= Hydrogen +Salt

  • False, Copper Oxide+ Acid=Salt + Hydrogen
  • True
  • False, Copper Oxide + Acid= Salt+Water
  • False, Copper Dioxide+Acid=Salt+Water

4. Metal Carbonate+Acid=......

  • =Salt+ Water+ Oxygen
  • =Hydrogen+Water
  • =Salt+ Carbon Dioxide+ Water
  • =Salt+Hydrogen+Oxygen

5. The word equation ' Magnisium Carbonate+ Hydrochloric Acid= MagnesiumChloride+ Water+Carbon Dioxie' in a symbol form is.....

  • MgCO3 +H2SO4= MgSo+H20+CO2
  • Mg+H20S= MgSo2 +CO2
  • MgH20+CO3=MgCo2+H20+CO2
  • MgH0+CO3+MgHy +CO2

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