A) Energy of formation B) Free energy C) Activation 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) Fourth order reaction B) Zero order reaction C) First order reaction D) Second order reaction
A) First order reaction B) Second order reaction C) Zero order reaction D) Fourth order reaction
A) Fourth order reaction B) Second order reaction C) First order reaction D) Zero order reaction
A) Collision B) Molecularity C) Reaction mechanism D) Order reaction
A) Rate determining step B) Rate of reaction C) Reaction mechanism D) Molecularity
A) Rate of reaction B) Photochemical reaction C) Order of reaction D) Collision
A) Activation energy B) Energetics C) Enthalpy D) Catalyst
A) Activated complex B) Energy barrier C) Rate curve D) Reaction profile
A) Calcium B) Copper C) Aluminium D) Magnesium
A) Nitrogen (IV) oxide B) Carbon (II) oxide C) Nitrogen D) Oxygen
A) Zn and Al B) Si and Pb C) Be and Mg D) Na and K
A) KClO3 B) NaNO3 C) NaHCO3 D) CaCO3
A) Oxochlorate (I) acid B) Trioxochlorate (v) salt. C) Bleaching powder D) Chlorinated water
A) It is fairly soluble in water B) It thermally decomposes before it rekindles glowing splint. C) It is only laughing gas. D) It is less dense than oxygen
A) Oxygen B) Carbon (iv) oxide C) Rare gases D) Water vapour
A) NaClO3, NaCl, and H2O B) NaClO3, NaClO, and H2 C) NaClO, NaCl, and H2O D) NaClO3 and H2O
A) Hydrogen B) Chlorine C) Nitrogen D) Oxygen
A) Cu B) Ag C) Na D) Au
A) A reaction where a substance speeds up the reaction due to heat B) A reaction where two substances combine to form a new substance 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) Third law of thermodynamics B) First law of thermodynamics C) Zeroth 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 slows down the reaction C) A reaction where a substance speeds up the reaction without being consumed D) A reaction where two substances combine to form a new substance
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] - [B] C) K = [A] + [B] D) K = [A] x [B]
A) It remains constant B) It decreases C) It fluctuates D) It increases
A) K is unrelated to the rate constant B) K is inversely proportional to the rate constant C) K is equal to the rate constant D) K is directly proportional to the rate constant
A) Molarity (M) B) Pressure (atm) C) No unit D) Temperature (K)
A) K = [reactants] x [products] B) K = [products] x [reactants] C) K = [products] / [reactants] D) K = [reactants] / [products]
A) The concentration of reactants is always greater than the concentration of products B) The equilibrium constant is always constant C) A change in conditions will shift the equilibrium in the direction that tends to counteract the change. D) The rate of a reaction is always constant
A) By the Solvay process B) By the Haber process C) By the Bosch process D) By the Ostwald process
A) Nitrous oxide (N2O) B) Nitrogen dioxide (NO2) C) Nitrogen trioxide (N2O3) D) Nitric oxide (NO)
A) The process by which nitrogen is converted into its oxides B) The process by which nitrogen is fixed into the soil C) The process by which nitrogen is cycled between the atmosphere, soil, and living organisms D) The process by which nitrogen is converted into ammonia
A) They are all transition metals B) They are all metals C) They are all nonmetals D) They are all noble gases
A) Solution B) Liquid C) Solid D) Gas
A) As a fertilizer B) As a medicine C) As a food preservative D) As a building material
A) They are metalloids B) They are highly reactive C) They are noble gases D) They are nonreactive
A) Density B) Electronegativity C) Boiling point D) Melting point
A) Distillation of seawater B) Oxidation of hydrogen chloride C) Reduction of sodium chloride D) Electrolysis of sodium chloride
A) Sodium chloride B) Chlorine water C) Calcium chloride D) Hydrogen chloride |