A) A substance that increases the rate of a chemical reaction without being consumed in the process. B) A substance that stops a chemical reaction from occurring. C) A substance that reacts with another substance to form a new compound. D) A substance that decreases the rate of a chemical reaction.
A) A biological catalyst B) A lipid molecule C) A neurotransmitter D) A structural protein
A) To inhibit the catalytic activity of a catalyst B) To change the chemical nature of the catalyst C) To replace the catalyst in a reaction D) To enhance the catalytic activity of a catalyst
A) Lowering the activation energy and increasing reaction rates B) Causing more waste to be generated C) Making the reactions more hazardous D) Increasing the production cost
A) When a byproduct of a reaction poisons the catalyst B) When a product of a reaction acts as a catalyst for that reaction C) When a catalyst is deactivated by the reaction mixture D) When a reactant of a reaction accelerates the reaction
A) Silver B) Enzymes C) Carbon nanotubes D) Magnesium oxide
A) To increase engine power B) To increase the fuel efficiency of the engine C) To reduce harmful emissions by converting them into less harmful substances D) To produce more greenhouse gases
A) Surface area of the catalyst B) Vessel size in which the reaction takes place C) Color of the catalyst D) Temperature of the surrounding environment
A) The speed at which a catalyst degrades B) The ease of recycling the catalyst C) The cost of the catalyst used in a reaction D) The ability of a catalyst to promote one specific reaction pathway over others
A) Solid catalysts are typically easier to separate from the reaction mixture B) Solid catalysts are always less efficient than homogeneous catalysts C) Solid catalysts have a higher reaction selectivity D) Solid catalysts are never used in industrial processes
A) French, meaning 'to change'. B) German, meaning 'to assist'. C) Greek, meaning 'loosen' or 'untie'. D) Latin, meaning 'to speed up'.
A) turnover number (TON) B) katal C) mole per second D) enzyme unit
A) enzyme unit B) turnover number (TON) C) katal D) turn over frequency
A) sulfur trioxide (SO3) B) oxygen (O2) C) sulfur dioxide (SO2) D) nitric oxide (NO)
A) Hydrogen B) Carbon dioxide C) Oxygen D) Water
A) Enzybiotics B) Synzymes C) Abzymes D) Ribozymes
A) Wilhelm Ostwald B) Vladimir Ipatieff C) Jöns Jakob Berzelius D) Gottlieb Kirchhoff
A) It decreases the available energy from the environment B) It stabilizes the transition state more than the starting material C) It changes the thermodynamic barrier D) It increases the difference in energy between starting materials and products
A) High-fructose corn syrup B) Ethanol C) Benzene D) Acetic acid
A) Vladimir Ipatieff B) Gottlieb Kirchhoff C) Johann Wolfgang Döbereiner D) Humphry Davy
A) Elizabeth Fulhame B) Johann Wolfgang Döbereiner C) Wilhelm Ostwald D) Humphry Davy
A) Water-gas shift reaction B) Sabatier reaction C) Steam reforming D) Fischer–Tropsch synthesis
A) NO2 + SO2 → NO + SO3 B) NO + SO3 → NO2 + SO2 C) 2 SO2 + O2 → 2 SO3 D) 2 NO + O2 → 2 NO2
A) Metal catalysts B) Biocatalysts C) Inorganic catalysts D) Acid–base catalysis
A) $900 billion B) $700 billion C) $500 billion D) $1 trillion
A) Noyori asymmetric hydrogenation B) Levofloxacin C) (R)-1,2-Propandiol D) Hydroxyacetone
A) Nitric oxide B) Hydrogen peroxide C) Chlorine gas D) Singlet oxygen
A) Eilhard Mitscherlich B) Johann Wolfgang Döbereiner C) Elizabeth Fulhame D) Humphry Davy
A) Hydrogenation with nickel catalyst B) Biocatalysis C) Enantioselective catalysis D) Friedel–Crafts reactions
A) Methanol B) Acrylic acid C) Ammonia D) Terephthalic acid
A) Jöns Jakob Berzelius B) Wilhelm Ostwald C) Elizabeth Fulhame D) Vladimir Ipatieff
A) Wilhelm Ostwald B) Gottlieb Kirchhoff C) Jöns Jakob Berzelius D) Vladimir Ipatieff
A) Biocatalysts B) Organometallic catalysts C) Electrocatalysts D) Photocatalysts
A) Fischer–Tropsch synthesis B) Sabatier reaction C) Water-gas shift reaction D) Carbonylation processes
A) Eilhard Mitscherlich B) Jöns Jakob Berzelius C) Gottlieb Kirchhoff D) Elizabeth Fulhame
A) 1811 B) 1835 C) 1794 D) 1880s |