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