A) Free energy B) Energy of reaction C) Energy of formation D) Activation energy
A) The fewer the collision the faster the rate of chemical reaction rate B) All collisions of reactants are effective 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) First order reaction B) Second order reaction C) Fourth order reaction D) Zero order reaction
A) Zero order reaction B) Second order reaction C) First order reaction D) Fourth order reaction
A) Fourth order reaction B) First order reaction C) Zero order reaction D) Second order reaction
A) Collision B) Order reaction C) Reaction mechanism D) Molecularity
A) Rate determining step B) Molecularity C) Rate of reaction D) Reaction mechanism
A) Rate of reaction B) Order of reaction C) Photochemical reaction D) Collision
A) Catalyst B) Activation energy C) Enthalpy D) Energetics
A) Energy barrier B) Activated complex C) Reaction profile D) Rate curve
A) Aluminium B) Calcium C) Magnesium D) Copper
A) Oxygen B) Carbon (II) oxide C) Nitrogen (IV) oxide D) Nitrogen
A) Be and Mg B) Zn and Al C) Na and K D) Si and Pb
A) NaHCO3 B) CaCO3 C) KClO3 D) NaNO3
A) Oxochlorate (I) acid B) Bleaching powder C) Chlorinated water D) Trioxochlorate (v) salt.
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) Oxygen B) Rare gases C) Water vapour D) Carbon (iv) oxide
A) NaClO3, NaClO, and H2 B) NaClO3 and H2O C) NaClO3, NaCl, and H2O D) NaClO, NaCl, and H2O
A) Chlorine B) Nitrogen C) Hydrogen D) Oxygen
A) Cu B) Na C) Ag D) Au
A) A reaction where a substance speeds up the reaction due to heat B) A reaction where a substance breaks down into two or more substances due to heat C) A reaction where two substances combine to form a new substance due to heat D) A reaction where a substance is removed from a mixture due to heat
A) Zeroth law of thermodynamics B) Third law of thermodynamics C) Second law of thermodynamics D) First law of thermodynamics
A) A reaction where two substances combine to form a new substance B) A reaction where a substance speeds up the reaction without being consumed C) A reaction where a substance slows down the reaction D) A reaction where a substance is removed from a mixture
A) Endothermic reactions release heat, while exothermic reactions absorb heat B) Endothermic reactions are always exothermic C) Exothermic reactions are always endothermic D) Endothermic reactions absorb heat, while exothermic reactions release heat
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 equal to the rate constant B) K is inversely proportional to the rate constant C) K is directly proportional to the rate constant D) K is unrelated to the rate constant
A) Temperature (K) B) Molarity (M) C) Pressure (atm) D) No unit
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 Haber process B) By the Ostwald process C) By the Solvay process D) By the Bosch process
A) Nitrogen trioxide (N2O3) B) Nitrogen dioxide (NO2) C) Nitrous oxide (N2O) D) Nitric oxide (NO)
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 nonmetals D) They are all metals
A) Solution B) Solid C) Liquid D) Gas
A) As a food preservative B) As a fertilizer C) As a building material D) As a medicine
A) They are metalloids B) They are noble gases C) They are nonreactive D) They are highly reactive
A) Boiling point B) Density C) Electronegativity D) Melting point
A) Reduction of sodium chloride B) Oxidation of hydrogen chloride C) Distillation of seawater D) Electrolysis of sodium chloride
A) Calcium chloride B) Sodium chloride C) Chlorine water D) Hydrogen chloride |