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