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