A given volume of methane diffuses in 20s. How long will ...
A given volume of methane diffuses in 20s. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions?
[C = 12, H = 1, S = 32, O = 16
5s
20s
40s
60s
Correct answer is C
Relative molecular mass of CH4 = 12 * 1 + 4 = 16
Relative molecular mass of SO2 = 32 + 10 *2 = 64
tSO2/tCH4 = √MSO2/MCH4
t/20 = √64/16 = √4
t/20 = 2
∴ t = 20 * 2 = 40sec
Which of the following pairs of compounds belongs to the same homologous series? ...
The enzymes responsible for converting sucrose into two simple isomeric sugars is ...
The following metals are extracted by the electrolytic method except ...
CO(g) + H2O(g) \(\to\) \(CO_{2g}\) + H2(g) \(\Delta\)H = -4100J. Which of the following f...
What is the valence shell electron configuration of the element with atomic number 17? ...
The method used to collect gas in the laboratory depends on its? I. boiling point II. densi...
Which of the following pairs of properties of alkali metals decreases down the group? ...