TS EAMCET 4-Aug-2021 Shift 1 Question Paper

As per kinetic theory of gases,
Statement I Since, average kinetic energy of gases, KEav=‌

3

2

KBT
∴‌‌KEav∝T
Hence, temperature of gases is a measure of average kinetic energy of a molecule is correct.
So, option (a) is the correct.
Statement II As temperature of gas is independent of nature of gas.
Hence, option (b) is the incorrect.
Statement III Since, vrms=√‌

3RT

M

where, v‌rms ‌= root mean square speed,
R= universal gas constant
T= temperature
and M= molar mass . ∵‌‌vrms∝‌

1

√M

As M increases v‌rms ‌ decreases.
Hence, option (c) is the correct.