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