Write the name of the metal nanoparticle used to remove E. coli bacteria from water.
When hydrogen peroxide is added to an acidified solution of KI, iodine (I2) is liberated. In this case, hydrogen peroxide acts as?
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.
If the mean and variance of a binomial distribution are \( 18 \) and \( 12 \) respectively, then the value of \( n \) is __________.