A) Energy of formation B) Energy of reaction C) Free energy D) Activation energy
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) First order reaction B) Fourth order reaction C) Zero order reaction D) Second order reaction
A) Second order reaction B) Fourth order reaction C) First order reaction D) Zero order reaction
A) Fourth order reaction B) Second order reaction C) Zero order reaction D) First order reaction
A) Collision B) Reaction mechanism C) Order reaction D) Molecularity
A) Rate of reaction B) Molecularity C) Rate determining step D) Reaction mechanism
A) Collision B) Order of reaction C) Photochemical reaction D) Rate of reaction
A) Enthalpy B) Activation energy C) Energetics D) Catalyst
A) Rate curve B) Energy barrier C) Reaction profile D) Activated complex
A) Magnesium B) Aluminium C) Calcium D) Copper
A) Oxygen B) Carbon (II) oxide C) Nitrogen (IV) oxide D) Nitrogen
A) Na and K B) Zn and Al C) Be and Mg D) Si and Pb
A) NaNO3 B) KClO3 C) CaCO3 D) NaHCO3
A) Oxochlorate (I) acid B) Trioxochlorate (v) salt. C) Chlorinated water D) Bleaching powder
A) It thermally decomposes before it rekindles glowing splint. B) It is only laughing gas. C) It is less dense than oxygen D) It is fairly soluble in water
A) Oxygen B) Carbon (iv) oxide C) Water vapour D) Rare gases
A) NaClO3 and H2O B) NaClO, NaCl, and H2O C) NaClO3, NaCl, and H2O D) NaClO3, NaClO, and H2
A) Chlorine B) Hydrogen C) Nitrogen D) Oxygen
A) Na B) Cu C) Ag D) Au
A) A reaction where a substance breaks down into two or more substances due to heat B) A reaction where a substance speeds up the reaction due to heat C) A reaction where a substance is removed from a mixture due to heat D) A reaction where two substances combine to form a new substance due to heat
A) Second law of thermodynamics B) Third 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 two substances combine to form a new substance C) A reaction where a substance slows down the reaction D) A reaction where a substance is removed from a mixture
A) Exothermic reactions are always endothermic B) Endothermic reactions absorb heat, while exothermic reactions release heat C) Endothermic reactions are always exothermic D) Endothermic reactions release heat, while exothermic reactions absorb heat
A) K = [A] - [B] B) K = [A] + [B] C) K = [A] / [B] D) K = [A] x [B]
A) It fluctuates B) It decreases C) It increases 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) No unit B) Molarity (M) C) Temperature (K) D) Pressure (atm)
A) K = [reactants] x [products] B) K = [products] / [reactants] C) K = [reactants] / [products] D) K = [products] x [reactants]
A) The concentration of reactants is always greater than the concentration of products B) The rate of a reaction is always constant C) A change in conditions will shift the equilibrium in the direction that tends to counteract the change. D) The equilibrium constant is always constant
A) By the Haber process B) By the Bosch process C) By the Ostwald process D) By the Solvay process
A) Nitric oxide (NO) B) Nitrogen trioxide (N2O3) C) Nitrous oxide (N2O) D) Nitrogen dioxide (NO2)
A) The process by which nitrogen is converted into ammonia B) The process by which nitrogen is cycled between the atmosphere, soil, and living organisms 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 nonmetals D) They are all transition metals
A) Gas B) Liquid C) Solution D) Solid
A) As a food preservative B) As a building material C) As a fertilizer D) As a medicine
A) They are nonreactive B) They are noble gases C) They are metalloids D) They are highly reactive
A) Melting point B) Boiling point C) Density D) Electronegativity
A) Electrolysis of sodium chloride B) Reduction of sodium chloride C) Oxidation of hydrogen chloride D) Distillation of seawater
A) Chlorine water B) Calcium chloride C) Hydrogen chloride D) Sodium chloride |