The following are miscible with water except
ethylethanoate
methanol
ethanoic acid
methanoic acid
ethanol
Correct answer is A
No explanation has been provided for this answer.
The most suitable method to use when separating an insoluble solid from a liquid is
evaporation
filtration
magnetization
sublimation
distillation
Correct answer is B
No explanation has been provided for this answer.
Which of the following reactions represents the laboratory preparation of hydrogen?
C(s) + H 2 O(l) → CO(g) + H2(g)
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g)
Cu(s) + H2O(l) → CuO(s) + H2(g)
2AI(s) + 3H2O(l) → Al2O3(s) + 3H2(g)
Correct answer is C
No explanation has been provided for this answer.
Ammonium chloride
Brine
Limestone
Calcium oxide
Calcium chloride
Correct answer is E
No explanation has been provided for this answer.
lodine crystals sublime
lodine atoms are held together by strong forces
lodine molecules are held together by weak forces
lodine molecules are covalent
lodine is a solid at room temperature
Correct answer is C
No explanation has been provided for this answer.