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