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