A gas expands isothermally to double its volume. The rms speed of its molecules will be
(A) Increased
(B) Decreased
(C) Remains constant
(D) First increases and then decreases

An ideal gas at 300K is expanded isothermally to double its volume,then pressure of the gas will be

Species diversity______as one moves from high to low altitudes. (a) increase (b) decreases (c) first increases then decreases (d) first decreases then increases

When day light hours are increased, the rate of photosynthesis (a) Increases (b) Decreases (c) Remains unchanged (d) None of the above

A gas expands such that its initial and final temperatures are equal. Also the process followed by the gas traces a straight line on the P-V diagram (i) The temperature of the gas remains constant throughout (ii) The temperature of the gas first increases and then decreases (iii) The temperature of the gas first decreases and then increases (iv) The straight line has negative slope

Neon gas of a given mass expands isothermally to double volume . What should be the further fractional decreases in pressure , so that the gas when adiabatically compressed from that state , reaches the original state ?

The temperature of an ideal gas is increased from 27 ^@ C to 927^(@)C . The rms speed of its molecules becomes.

At what temperature. The rms velocity of gas molecules would be double of its value at NTP,if pressure is remaining constant?

Will the kinetic energy of molecules increase, decrease or remain same if : (i) the temperature is increased ? (ii) the pressure is decreased ? (iii) the volume is decreased ?

The speed of sound through a gaseous medium bears a constant ratio with the rms speed of its molecules. The constant ratio is

When frequency of a vibrating object increases, its time period decreases.