Speed of sound ...................(increases/decreases) with temperature.

Electronegativity ........... (increases / decreases) down the group and ................... (increases / decreases) along the period.

Atomic radii ............................ (increases / decreases) along the period and .............. (increases / decreases) down the group.

Statement 1: A tuning fork of constant frequency sends sound waves in air. If temperature of the air increases, then the wavelength of sound wave in air decreases. Statement 2: Speed of sound in air increases with increases in temperature of air A. Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1. B. Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1. C. Statement-1 is true but statement-2 is false D. Statement-1 is false, Statement-2 is true

The rate of chemisorption a. increaeses with decreases in temperature b. increases with increasesin tempreture c. increases with decreases in the pressure of gas d. is independent of the pressure of gas

In the case of chemisorption, why adsorption first increases and then decreases with temperature?

In the case of chemisorption, why adsorption first increases and then decreases with temperature?

Why does the speed of sound increase with increase in temperature?

Transpiration decreases as air temperature increases.

Normally, solubility of a crystalline solid increases with temperature. Does it increase uniformly in all cases? Name a substance whose solubility : initially increases then decreases with rise in temperature.

The rate of physisorption increases with (a)Decrease in temperature (b)Increase in temperature (c)Both A and B (d)None of these