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