A) Energy of reaction B) Activation energy C) Energy of formation 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) All collisions of reactants are effective D) Reactants collide more frequently to bring about a reduction in the rate of reaction
A) First order reaction B) Zero order reaction C) Fourth order reaction D) Second order reaction
A) First order reaction B) Fourth order reaction C) Second order reaction D) Zero order reaction
A) First order reaction B) Second order reaction C) Fourth order reaction D) Zero order reaction
A) Collision B) Molecularity C) Order reaction D) Reaction mechanism
A) Reaction mechanism B) Rate determining step C) Rate of reaction D) Molecularity
A) Photochemical reaction B) Collision C) Rate of reaction D) Order of reaction
A) Enthalpy B) Energetics C) Catalyst D) Activation energy
A) Energy barrier B) Reaction profile C) Activated complex D) Rate curve
A) Magnesium B) Copper C) Aluminium D) Calcium
A) Nitrogen B) Oxygen C) Nitrogen (IV) oxide D) Carbon (II) oxide
A) Si and Pb B) Zn and Al C) Na and K D) Be and Mg
A) CaCO3 B) NaHCO3 C) NaNO3 D) KClO3
A) Oxochlorate (I) acid B) Bleaching powder C) Trioxochlorate (v) salt. D) Chlorinated water
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) Rare gases C) Water vapour D) Oxygen
A) NaClO3, NaClO, and H2 B) NaClO, NaCl, and H2O C) NaClO3 and H2O D) NaClO3, NaCl, and H2O
A) Nitrogen B) Oxygen C) Chlorine D) Hydrogen
A) Cu B) Na C) Au 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 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) First law of thermodynamics B) Zeroth law of thermodynamics C) Third law of thermodynamics D) Second law of thermodynamics
A) A reaction where two substances combine to form a new substance 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 a substance is removed from a mixture
A) Endothermic reactions release heat, while exothermic reactions absorb heat B) Endothermic reactions absorb heat, while exothermic reactions release heat C) Endothermic reactions are always exothermic D) Exothermic reactions are always endothermic
A) K = [A] - [B] B) K = [A] / [B] C) K = [A] + [B] D) K = [A] x [B]
A) It increases B) It fluctuates C) It decreases D) It remains constant
A) K is directly proportional to the rate constant B) K is unrelated to the rate constant C) K is equal to the rate constant D) K is inversely proportional to the rate constant
A) Temperature (K) B) Pressure (atm) C) No unit D) Molarity (M)
A) K = [products] / [reactants] B) K = [products] x [reactants] C) K = [reactants] x [products] D) K = [reactants] / [products]
A) The equilibrium constant is always constant 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 concentration of reactants is always greater than the concentration of products
A) By the Bosch process B) By the Haber process C) By the Solvay process D) By the Ostwald process
A) Nitrogen trioxide (N2O3) B) Nitric oxide (NO) C) Nitrous oxide (N2O) D) Nitrogen dioxide (NO2)
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) Solid D) Liquid
A) As a food preservative B) As a fertilizer C) As a building material D) As a medicine
A) They are noble gases B) They are metalloids C) They are highly reactive D) They are nonreactive
A) Electronegativity B) Melting point C) Boiling point D) Density
A) Reduction of sodium chloride B) Electrolysis of sodium chloride C) Oxidation of hydrogen chloride D) Distillation of seawater
A) Calcium chloride B) Chlorine water C) Sodium chloride D) Hydrogen chloride |