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