Write one method each for the laboratory preparation of dihydrogen from I) mineral acid ii) aqueous alkali. Which is the catalyst used for the reaction?

Write one method each for the laboratory preparation of dihydrogen from I) mineral acid ii) aqueous alkali. Which is the product in this reaction?

2SO_2+O_2 to 2SO_3 represents an important stage in the Industrial Preparation of Sulphuric acid. Which is the catalyst used in this process ?

Which one of the following reaction can not be used for the preparation of iodoform?

Chlorine is prepared in the laboratory by treating manganese dioxide (MnO_2) with aqueous hydrochloric acid according to the reaction?

Write a method to prepare Glucose from starch. Write the chemical equation of the reaction.

Name one example of a reaction in which dihydrogen acts as (i) an oxidizing agent

Give possible explanation fòr each of the following: i. Cyclohexanone forms cyanohydrin in good yield but 2,2,6 -trimethylcyclohexanone does not. ii. There are two -NH_2 groups in semicarbazide. However, only one is involved in the formation of semicarbazones. iii. During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed.