The velocity of sound is generally greater in solids than in gases at N.T.P. why?

The velocity of X-rays is greater than that of visible radiation. (Write Yes or No)

Assertion :Species with low genetic variability are generally at greater risk of extinction than the species with more genetic variability. Reason: Species with low genetic variability are more vulnerable to disease, predators or other environmental challenges.

Why do actinoids in general exhibit a greater range of oxidation states than the lanthanoids?

At what temperature will RMS velocity of molecule of gas be four times it's value of N.T.P. ?

At what temperature will the r.m.s. velocity of a gas be double its value at N.T.P. ?

Why is electron affinity of chlorine greater than that of fluorine ?

How many molecules are present in 0.224 L of a gas at N.T.P.?