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