A) Energy of formation B) Activation energy C) Free energy D) Energy of reaction
A) All collisions of reactants are effective 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) Reactant must collide with a certain amount of energy to form products
A) Zero order reaction B) Second order reaction C) Fourth order reaction D) First order reaction
A) Zero order reaction B) Second order reaction C) First order reaction D) Fourth order reaction
A) Zero order reaction B) Second order reaction C) First order reaction D) Fourth order reaction
A) Reaction mechanism B) Collision C) Order reaction D) Molecularity
A) Rate of reaction B) Rate determining step C) Reaction mechanism D) Molecularity
A) Collision B) Rate of reaction C) Order of reaction D) Photochemical reaction
A) Activation energy B) Enthalpy C) Energetics D) Catalyst
A) Rate curve B) Activated complex C) Reaction profile D) Energy barrier
A) Magnesium B) Copper C) Calcium D) Aluminium
A) Carbon (II) oxide B) Nitrogen C) Oxygen D) Nitrogen (IV) oxide
A) Na and K B) Si and Pb C) Zn and Al D) Be and Mg
A) NaHCO3 B) KClO3 C) CaCO3 D) NaNO3
A) Trioxochlorate (v) salt. B) Oxochlorate (I) acid C) Bleaching powder D) Chlorinated water
A) It is less dense than oxygen B) It is fairly soluble in water C) It thermally decomposes before it rekindles glowing splint. D) It is only laughing gas.
A) Rare gases B) Oxygen C) Carbon (iv) oxide D) Water vapour
A) NaClO3, NaCl, and H2O B) NaClO3, NaClO, and H2 C) NaClO3 and H2O D) NaClO, NaCl, and H2O
A) Nitrogen B) Oxygen C) Hydrogen D) Chlorine
A) Na B) Au C) Ag D) Cu
A) A reaction where two substances combine to form a new substance due to heat B) A reaction where a substance speeds up the reaction 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) First law of thermodynamics B) Second law of thermodynamics C) Zeroth law of thermodynamics D) Third law of thermodynamics
A) A reaction where a substance is removed from a mixture B) A reaction where a substance slows down the reaction C) A reaction where two substances combine to form a new substance D) A reaction where a substance speeds up the reaction without being consumed
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] + [B] B) K = [A] / [B] C) K = [A] - [B] D) K = [A] x [B]
A) It decreases B) It fluctuates C) It remains constant D) It increases
A) K is equal to the rate constant B) K is unrelated to the rate constant C) K is directly proportional 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 = [reactants] x [products] B) K = [products] / [reactants] C) K = [products] x [reactants] D) K = [reactants] / [products]
A) The concentration of reactants is always greater than the concentration of products B) The rate of a reaction is always constant C) The equilibrium constant is always constant D) A change in conditions will shift the equilibrium in the direction that tends to counteract the change.
A) By the Bosch process B) By the Haber process C) By the Solvay process D) By the Ostwald 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 ammonia C) The process by which nitrogen is fixed into the soil 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) Liquid B) Solution C) Solid D) Gas
A) As a building material B) As a fertilizer C) As a food preservative D) As a medicine
A) They are metalloids B) They are highly reactive C) They are noble gases D) They are nonreactive
A) Melting point B) Boiling point C) Density D) Electronegativity
A) Reduction of sodium chloride B) Distillation of seawater C) Oxidation of hydrogen chloride D) Electrolysis of sodium chloride
A) Chlorine water B) Sodium chloride C) Calcium chloride D) Hydrogen chloride |