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