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