How does velocity of sound in air change when temperature rises by `1^(@)C`?

Velocity of sound in air depends on

At room temperature (27^(@)C) the velocity of sound in air is 330 m/s. the increase in velocity of sound when temperature is increased by 1^(@)C is

The velocity of sound in air at 27^(@)C is 330 m/s. the velocity of sound when the temperature of the gas is raised to 227^(@)C is

The velocity of sound in air when temperature is halved and pressure doubled will be (The velocity of sound in air at NTP is 330 m/s)

How does Young's modulus change with rise in temperature?

The velocity of sound in air is independent of changes is