How is dihydrogen prepared
a. from water by using a reducing agent?
b. in the laboratory in pure form?
c. from hydrocarbons?

How is heavy water prepared form normal water?

Pure nitrogen can be prepared from

Pure nitrogen can be prepared from

(i) How would you prepare dihydrogen from water using a reducing agent ? (ii) How would you prepare dihydrogen from a substance other than water ? (iii) How would you prepare pure dihydrogen in the laboratory ?

How is ethyl chloride prepared from alcohol using thionyl chloride? "

________ is used as a reducing agent in the extraction of B and Si.