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