As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :
3 g of activated charcoal was added to 50 mL. of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is :
If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a dictionary; then the position of the word SMALL is :
An unknown alcohol is treated with the ''Lucas reagent'' to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
A solid body of constant heat capacity J/∘C is being heated by keeping it in contact with reservoirs in two ways :
(i) Sequentially keeping in contact with 2 reservoirs such that each reservoir supplies same amount of heat.
(ii) Sequentially keeping in contact 8 reservoirs such that each reservoir supplies same amount of heat.
In both the cases body is brought from initial temperature 100∘C to final temperature 200∘C. Entropy change of the body in the two cases respectively is :