What type of reaction is involved when wood shavings produce a brown gas with concentrated HNO3?
Redox reaction
Destructive distillation
Dehydration
Nutralization
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds dissolves in water to give an alkaline solution?
Ammonium chloride
Sodium chloride
Sulphur (IV) oxide
Potassium oxide
Correct answer is D
No explanation has been provided for this answer.
Which of the following salts is stable to heat?
K2CO3
(NH4)2SO4
NaHCO 3
AgNO3
Correct answer is A
No explanation has been provided for this answer.
If a solution has a pH of 2, it can be concluded that it
is a weak electrolyte
has hyrogen ion concentration of 0.2 mol sm-3
is twice as acidic as a solution of pH 1,
will produce effervescence with magnesium ribbon
Correct answer is D
No explanation has been provided for this answer.
hydrogen
oxygen
carbon (IV) oxide
sulphur (VI) oxide
Correct answer is C
No explanation has been provided for this answer.