a polymerization reaction
an isomerization reaction
an addition reaction
a substitution reaction
a reduction reaction
Correct answer is D
No explanation has been provided for this answer.
are all gases
have the general formula CnH2n + 2O
contain only carbon and hydrogen
are usually soluble in water
are usually active compounds
Correct answer is C
No explanation has been provided for this answer.
Sodium hydroxide (NaOH) pellets are
deliquescent
hygroscopic
efflorescent
hydrated
fluorescent
Correct answer is A
No explanation has been provided for this answer.
Water is said to be 'hard' if it
easily forms ice
has to be warmed before sodium chloride dissolves in it
froms an insoluble scum with soap
contains nitrates
contains sodium ions
Correct answer is C
No explanation has been provided for this answer.
Nitrogen can best be obtained from a mixture over oxygen and nitrogen by passing the mixture over
potassium hydroxide
heated gold
heated magnesium
heated phosphorus
calcium chloride
Correct answer is D
No explanation has been provided for this answer.