CO, SO2,NO2,H2S
SO2,NO2,H2S,CO
CO,H2S,SO2,NO2
CO,H2S,NO2,SO2
Correct answer is D
- At a constant temperature and pressure, the rate lof diffusion of a gas is inversely proportional to the rate of its relative molecular mass.
- The higher the RMM of a gas the Lower the rate of diffusion and vice versa
- Hence; CO,H2S,NO2,SO2 will be the order of diffusion.
28
32
44
71
Correct answer is D
500cm3 = 1.58g
=22400cm = (1.58g)/(500cm3) χ 22400cm3) = 70.78 g
= 71g
If a gas occupies a container of volume 146 cm3 at 18°C and 0.97`atm, its volume 146cm3 at s.t.p is?
133
146
266
292
Correct answer is A
V1 = 146cm3 T1 = 273 + 118 = 291 k
P1 = 0.971 atmosphere
V2 = ? T2 = 273K P2 = 1 atom
V2 = (0.971 atom χ 146cm3 χ 273k)/(1atm χ 291k) = 132997 0r = 133cm3
Which of the following is formed when maltose reacts with concentrated tetraoxosulphate (VI) acid ?
Carbon (IV) oxide
Coal tar
Charcoal
Toxic fumes
Correct answer is C
No explanation has been provided for this answer.
45
55
80
100
Correct answer is B
No explanation has been provided for this answer.