A) Activation energy B) Energy of reaction C) Energy of formation D) Free energy
A) All collisions of reactants are effective B) Reactants collide more frequently to bring about a reduction in the rate of reaction C) Reactant must collide with a certain amount of energy to form products D) The fewer the collision the faster the rate of chemical reaction rate
A) Zero order reaction B) Second order reaction C) Fourth order reaction D) First order reaction
A) First order reaction B) Fourth order reaction C) Zero order reaction D) Second order reaction
A) Fourth order reaction B) Zero order reaction C) First order reaction D) Second order reaction
A) Reaction mechanism B) Order reaction C) Collision D) Molecularity
A) Rate determining step B) Rate of reaction C) Molecularity D) Reaction mechanism
A) Order of reaction B) Collision C) Photochemical reaction D) Rate of reaction
A) Energetics B) Enthalpy C) Activation energy D) Catalyst
A) Activated complex B) Reaction profile C) Energy barrier D) Rate curve
A) Calcium B) Magnesium C) Aluminium D) Copper
A) Nitrogen (IV) oxide B) Carbon (II) oxide C) Oxygen D) Nitrogen
A) Si and Pb B) Na and K C) Zn and Al D) Be and Mg
A) KClO3 B) NaNO3 C) NaHCO3 D) CaCO3
A) Oxochlorate (I) acid B) Chlorinated water C) Trioxochlorate (v) salt. D) Bleaching powder
A) It thermally decomposes before it rekindles glowing splint. B) It is less dense than oxygen C) It is only laughing gas. D) It is fairly soluble in water
A) Carbon (iv) oxide B) Water vapour C) Oxygen D) Rare gases
A) NaClO3 and H2O B) NaClO, NaCl, and H2O C) NaClO3, NaClO, and H2 D) NaClO3, NaCl, and H2O
A) Chlorine B) Nitrogen C) Hydrogen D) Oxygen
A) Ag B) Na C) Au D) Cu
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 breaks down into two or more substances due to heat D) A reaction where a substance speeds up the reaction due to heat
A) First law of thermodynamics B) Third law of thermodynamics C) Zeroth 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 two substances combine to form a new substance C) A reaction where a substance slows down the reaction D) A reaction where a substance is removed from a mixture
A) Endothermic reactions absorb heat, while exothermic reactions release heat B) Exothermic reactions are always endothermic C) Endothermic reactions release heat, while exothermic reactions absorb heat D) Endothermic reactions are always exothermic
A) K = [A] / [B] B) K = [A] x [B] C) K = [A] - [B] D) K = [A] + [B]
A) It remains constant B) It increases C) It decreases D) It fluctuates
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) No unit C) Molarity (M) D) Temperature (K)
A) K = [reactants] x [products] B) K = [reactants] / [products] C) K = [products] x [reactants] D) K = [products] / [reactants]
A) A change in conditions will shift the equilibrium in the direction that tends to counteract the change. B) The concentration of reactants is always greater than the concentration of products C) The equilibrium constant is always constant D) The rate of a reaction is always constant
A) By the Ostwald process B) By the Haber process C) By the Solvay process D) By the Bosch process
A) Nitrogen trioxide (N2O3) B) Nitrous oxide (N2O) C) Nitrogen dioxide (NO2) D) Nitric oxide (NO)
A) The process by which nitrogen is converted into its oxides 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 fixed into the soil
A) They are all nonmetals B) They are all metals C) They are all transition metals D) They are all noble gases
A) Gas B) Solution C) Liquid D) Solid
A) As a medicine B) As a food preservative C) As a fertilizer D) As a building material
A) They are noble gases B) They are metalloids C) They are nonreactive D) They are highly reactive
A) Melting point B) Density C) Boiling point 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) Hydrogen chloride C) Calcium chloride D) Chlorine water |