Ca2+
Mg2+
Zn2+
Cu2+
Correct answer is C
No explanation has been provided for this answer.
A gas that will turn orange potassium heptaoxodichromate (lV) solution to clear green is?
sulphur (ii) oxide
hydrogen sulphide
sulphide (lV) oxide
hydrogen chloride
Correct answer is A
No explanation has been provided for this answer.
Sulphur exists in six forms in the solid state. This property is known as?
isomerism
allotropy
isotopy
isomorphism
Correct answer is B
No explanation has been provided for this answer.
washing with water under pressure
passing the mixture into lime water
using ammoniacal copper (l) chloride
drying over phoshorus (V) oxide
Correct answer is A
The carbon (IV) oxide produced along with the hydrogen is removed by dissolving it in water under a pressure of 30atm or other solvents like caustic soda solution.
Which of the following equilibria is shifted to the right as a result of an increase in pressure?
H2(g) + I2(g) 2HI(g)
2NO2(g) N2O4(g)
PCl5(s) PCl3(s) + Cl2(g)
2O3(g) 3O2(g)
Correct answer is B
No explanation has been provided for this answer.