A) Energy of formation B) Activation energy C) Energy of reaction D) Free energy
A) Reactant must collide with a certain amount of energy to form products B) Reactants collide more frequently to bring about a reduction in the rate of reaction C) All collisions of reactants are effective D) The fewer the collision the faster the rate of chemical reaction rate
A) Fourth order reaction B) Second order reaction C) Zero order reaction D) First order reaction
A) Second order reaction B) First order reaction C) Fourth order reaction D) Zero order reaction
A) Second order reaction B) First order reaction C) Zero order reaction D) Fourth order reaction
A) Molecularity B) Order reaction C) Reaction mechanism D) Collision
A) Reaction mechanism B) Rate determining step C) Molecularity D) Rate of reaction
A) Collision B) Rate of reaction C) Order of reaction D) Photochemical reaction
A) Catalyst B) Energetics C) Enthalpy D) Activation energy
A) Reaction profile B) Rate curve C) Activated complex D) Energy barrier
A) Magnesium B) Aluminium C) Calcium D) Copper
A) Carbon (II) oxide B) Oxygen C) Nitrogen (IV) oxide D) Nitrogen
A) Zn and Al B) Si and Pb C) Na and K D) Be and Mg
A) CaCO3 B) KClO3 C) NaHCO3 D) NaNO3
A) Chlorinated water B) Bleaching powder C) Trioxochlorate (v) salt. D) Oxochlorate (I) acid
A) It is fairly soluble in water B) It is less dense than oxygen C) It thermally decomposes before it rekindles glowing splint. D) It is only laughing gas.
A) Water vapour B) Carbon (iv) oxide C) Oxygen D) Rare gases
A) NaClO3, NaCl, and H2O B) NaClO3, NaClO, and H2 C) NaClO, NaCl, and H2O D) NaClO3 and H2O
A) Oxygen B) Hydrogen C) Chlorine D) Nitrogen
A) Cu B) Au C) Na D) Ag
A) A reaction where two substances combine to form a new substance due to heat B) A reaction where a substance is removed from a mixture due to heat C) A reaction where a substance speeds up the reaction due to heat D) A reaction where a substance breaks down into two or more substances due to heat
A) Third law of thermodynamics B) Second law of thermodynamics C) Zeroth law of thermodynamics D) First law of thermodynamics
A) A reaction where a substance speeds up the reaction without being consumed B) A reaction where a substance slows down the reaction C) A reaction where a substance is removed from a mixture D) A reaction where two substances combine to form a new substance
A) Endothermic reactions are always exothermic B) Exothermic reactions are always endothermic C) Endothermic reactions absorb heat, while exothermic reactions release heat D) Endothermic reactions release heat, while exothermic reactions absorb heat
A) K = [A] - [B] B) K = [A] x [B] C) K = [A] / [B] D) K = [A] + [B]
A) It decreases B) It increases C) It fluctuates D) It remains constant
A) K is directly proportional to the rate constant B) K is unrelated to the rate constant C) K is inversely proportional to the rate constant D) K is equal to the rate constant
A) Temperature (K) B) Pressure (atm) C) Molarity (M) D) No unit
A) K = [products] x [reactants] B) K = [products] / [reactants] C) K = [reactants] x [products] D) K = [reactants] / [products]
A) The concentration of reactants is always greater than the concentration of products B) A change in conditions will shift the equilibrium in the direction that tends to counteract the change. C) The equilibrium constant is always constant D) The rate of a reaction is always constant
A) By the Solvay process B) By the Haber process C) By the Ostwald process D) By the Bosch process
A) Nitrogen dioxide (NO2) B) Nitrous oxide (N2O) C) Nitric oxide (NO) D) Nitrogen trioxide (N2O3)
A) The process by which nitrogen is converted into its oxides B) The process by which nitrogen is cycled between the atmosphere, soil, and living organisms C) The process by which nitrogen is fixed into the soil D) The process by which nitrogen is converted into ammonia
A) They are all transition metals B) They are all noble gases C) They are all nonmetals D) They are all metals
A) Liquid B) Solution C) Solid D) Gas
A) As a building material B) As a medicine C) As a fertilizer D) As a food preservative
A) They are noble gases B) They are highly reactive C) They are metalloids D) They are nonreactive
A) Boiling point B) Electronegativity C) Density D) Melting point
A) Distillation of seawater B) Electrolysis of sodium chloride C) Oxidation of hydrogen chloride D) Reduction of sodium chloride
A) Calcium chloride B) Chlorine water C) Sodium chloride D) Hydrogen chloride |