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