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