lilac
green
yellow
brick-red
Correct answer is B
No explanation has been provided for this answer.
Which of the following pairs of substance will react further with oxygen to form a higher oxide?
CO2 and H2O
NO and H2O
CO and CO2
SO2 and NO
Correct answer is D
No explanation has been provided for this answer.
The ion that will give a white precipitate with aqueous NaOH and soluble in excess of the base is
Ca2+
Mg2+
Zn2+
Cu2+
Correct answer is C
No explanation has been provided for this answer.
Dynamic equilibrium describes a situation where
a reaction gives back the reactant
the concentration of the reactant and products is equal
both forward and and reverse reactions proceed at the same rate
reactants are converted to products
Correct answer is C
No explanation has been provided for this answer.
The efficiency of a solid catalyst to increase reaction rates depends on its
surface area
solubility
concentration
quantity
Correct answer is A
No explanation has been provided for this answer.