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