Write the names of the chemicals used and the balanced chemical equation in the industrial production of urea.

Write the name and formula of an organic fertiliser produced from ammonia. OR Write down the formula of the black precipitate formed when H2S gas is passed through an aqueous solution of silver nitrate.

The gas which is identified by using Nessler's reagent is (a) NO2 (b) H₂S (c) HCl (d) NH3

Write, with the balanced chemical equation, what happens when dilute sulfuric acid is added to ferrous sulfide.

Write the name of a gas that can be prepared using Kipp's apparatus. Write the balanced chemical equation for the reaction of preparation of the gas. [1 + 1]

Write, with the balanced chemical equation, what happens when H2S gas is passed through an aqueous solution of Pb(NO3)2.

The substance used for drying ammonia gas is: (a) CaCl₂ (b) CaO (c) H₂SO₄ (d) P₂O₅

Fill up the blank: CaC₂ + N₂ → __________ + C

What will be the colour of the solution formed when excess aqueous ammonia is added to aqueous copper sulphate solution? (a) Yellow (b) Orange (c) Green (d) Deep blue

Write the formula of the black precipitate formed when H₂S gas is passed through an aqueous solution of lead nitrate.

Which metal is used as catalyst in Haber's process for preparation of ammonia?

Fill in the blank: 2NH₃ + CO₂ → ______ + H₂O