From the list of substances given - Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Ferrous sulphate – State: A substance that turns moist starch iodide paper blue.

Name the gas that turns moist starch iodide paper blue black.

Name the gas that turns moist starch iodide paper blue black.

From the list of substances given- Amonium sulphate, Lead carbonate, Copper nitrate, Ferrous sulphate- State a solution of the compound which gives a dirty green precipitate with sodium hydroxide.

From the substances - Ammonium sulphate , Lead carbonate ,Chlorine ,Copper nitrate , Ferrous sulphate- State : A compound which releases a reddish brown gas on reaction with conc . H_(2)SO_(4) & copper turnings.

Explain why chlorine turns moist starch iodide paper blue-black.

From the substances - Ammonium sulphate , Lead carbonate ,Chlorine ,Copper nitrate ,Iron [II] sulphate - A compound which on heating with NaOH produces a gas which forms dense white fumes with HCl.

Select from the list the gas that matches the description given in each case : [Methane , Hydrogen, Nitrogen , Ammonia , Nitrogen dioxide , Chlorine] A greenish yellow gas that turns moist starch iodide paper blue black.

Select from the list the gas that matches the description given in each case [Hydrogen , Nitrogen,Ammonia,Nitrogen dioxide, Chlorine] A greenish yellow gas that turns moist starch iodide paper blue black.

State your observation: When moist starch iodide paper is introduced into chlorine gas.

Identify the salt R from the observation Salt R is black in colour. On reacting with concentrated HCl, it liberates a pungent greenish yellow gas which turns moist starch iodide paper blue black.