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