A) A substance that increases the rate of a chemical reaction without being consumed in the process. B) A substance that decreases the rate of a chemical reaction. C) A substance that stops a chemical reaction from occurring. D) A substance that reacts with another substance to form a new compound.
A) A structural protein B) A lipid molecule C) A neurotransmitter D) A biological catalyst
A) To enhance the catalytic activity of a catalyst B) To inhibit the catalytic activity of a catalyst C) To replace the catalyst in a reaction D) To change the chemical nature of the catalyst
A) Making the reactions more hazardous B) Increasing the production cost C) Causing more waste to be generated D) Lowering the activation energy and increasing reaction rates
A) When a catalyst is deactivated by the reaction mixture B) When a reactant of a reaction accelerates the reaction C) When a byproduct of a reaction poisons the catalyst D) When a product of a reaction acts as a catalyst for that reaction
A) Carbon nanotubes B) Magnesium oxide C) Silver D) Enzymes
A) To produce more greenhouse gases B) To increase the fuel efficiency of the engine C) To increase engine power D) To reduce harmful emissions by converting them into less harmful substances
A) Color of the catalyst B) Surface area of the catalyst C) Temperature of the surrounding environment D) Vessel size in which the reaction takes place
A) The speed at which a catalyst degrades B) The cost of the catalyst used in a reaction C) The ease of recycling the catalyst 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 typically easier to separate from the reaction mixture C) Solid catalysts have a higher reaction selectivity D) Solid catalysts are always less efficient than homogeneous catalysts
A) Greek, meaning 'loosen' or 'untie'. B) Latin, meaning 'to speed up'. C) French, meaning 'to change'. D) German, meaning 'to assist'.
A) enzyme unit B) mole per second C) katal D) turnover number (TON)
A) turnover number (TON) B) enzyme unit C) turn over frequency D) katal
A) sulfur dioxide (SO2) B) sulfur trioxide (SO3) C) oxygen (O2) D) nitric oxide (NO)
A) Hydrogen B) Oxygen C) Carbon dioxide D) Water
A) Synzymes B) Abzymes C) Ribozymes D) Enzybiotics
A) Gottlieb Kirchhoff B) Jöns Jakob Berzelius C) Wilhelm Ostwald D) Vladimir Ipatieff
A) It decreases the available energy from the environment B) It stabilizes the transition state more than the starting material C) It increases the difference in energy between starting materials and products D) It changes the thermodynamic barrier
A) Acetic acid B) High-fructose corn syrup C) Ethanol D) Benzene
A) Vladimir Ipatieff B) Gottlieb Kirchhoff C) Johann Wolfgang Döbereiner D) Humphry Davy
A) Humphry Davy B) Elizabeth Fulhame C) Wilhelm Ostwald D) Johann Wolfgang Döbereiner
A) Sabatier reaction B) Steam reforming C) Water-gas shift reaction D) Fischer–Tropsch synthesis
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) Inorganic catalysts C) Acid–base catalysis D) Metal catalysts
A) $700 billion B) $1 trillion C) $900 billion D) $500 billion
A) Noyori asymmetric hydrogenation B) (R)-1,2-Propandiol C) Hydroxyacetone D) Levofloxacin
A) Chlorine gas B) Hydrogen peroxide C) Singlet oxygen D) Nitric oxide
A) Johann Wolfgang Döbereiner B) Elizabeth Fulhame C) Eilhard Mitscherlich D) Humphry Davy
A) Friedel–Crafts reactions B) Enantioselective catalysis C) Hydrogenation with nickel catalyst D) Biocatalysis
A) Acrylic acid B) Methanol C) Terephthalic acid D) Ammonia
A) Jöns Jakob Berzelius B) Vladimir Ipatieff C) Elizabeth Fulhame D) Wilhelm Ostwald
A) Jöns Jakob Berzelius B) Gottlieb Kirchhoff C) Vladimir Ipatieff D) Wilhelm Ostwald
A) Biocatalysts B) Photocatalysts C) Organometallic catalysts D) Electrocatalysts
A) Fischer–Tropsch synthesis B) Water-gas shift reaction C) Sabatier reaction D) Carbonylation processes
A) Eilhard Mitscherlich B) Elizabeth Fulhame C) Jöns Jakob Berzelius D) Gottlieb Kirchhoff
A) 1811 B) 1835 C) 1880s D) 1794 |