Which of the following gases can be collected by the method of downward delivery?
Chlorine
Oxygen
Ammonia
Hydrogen
Correct answer is A
No explanation has been provided for this answer.
The allotropy of carbon used in the decolourization of sugar is
Graphite
Soot
Charcoal
Lampblack
Correct answer is C
No explanation has been provided for this answer.
Which of the following shows little or no net reaction when the volume of the system is decreased?
H2(g) + I2(g) ↔ 2HI(g)
2NO2(g) ↔ N2O4(g)
PCl5(g) ↔ PCl3(g) + Cl2(g)
2O3(g) ↔ 3O2(g)
Correct answer is A
No explanation has been provided for this answer.
N2O4(g) ↔ 2NO2(g)
In the endothermic reaction above, more product formation will be favoured by
a constant volume
an increase in pressure
a decrease in pressure
a decrease in volume
Correct answer is C
No explanation has been provided for this answer.
Which of the following hydrogen halides the highest entropy value?
HF
HCl
HBr
HI
Correct answer is A
No explanation has been provided for this answer.