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