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