Applications of Chemical Reaction

As a result, the use of catalytic converter leads to a dramatic reduction in the emission of the following elements except:

• O

• CO

• HC

• NOx

What must be removed to stop the spoiling action of microorganism?

• favorable temperature

• moisture

• food

• all of the above

Which of the following is/are the factors that affect the reaction rate of a chemical reaction?

• Catalyst and Temperature

• Reactant Concentration

• Surface area of reactant

• All of the above

Tags

NGSS.HS-PS1-5

Why does catalyst do NOT need to be replaced frequently?

• not used up in a reaction

• do not do anything

• dangerous to the mixture

• very expensive

Which of the following does NOT increase the rate of a reaction?

• Increasing the concentration of reactant

• Increasing the temperature of reactant

• Increasing the size of reactant particles

• Using a catalyst

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Glass containers are NOT preferred for sampling rain water because ____________

• reaction takes place

• easily maintain

• affect the pH of the rain

• all of the above

What does a reaction mean?

• how fast reaction is

• how long reaction is

• how slow reaction is

• All of the above

Tags

NGSS.HS-PS1-5

What do you call the substance that speeds up chemical reaction but is NOT consumed by the reaction?

• Catalyst

• Reactant

• Concentration

• Physical State

Which factor can decrease the rate of a chemical reaction?

• high pressure

• low pressure

• both a and b

• cannot be determined

Which of the following factors play vital role in the corrosion process?

• temperature

• solute concentration

• surface area

• both a and b

Tags

NGSS.HS-PS1-5