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