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

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

Write with balanced chemical equation, what happens when hydrogen sulphide is passed through aqueous solution of lead nitrate.

What colour is produced when H₂S gas is passed through a solution of potassium dichromate acidified with dilute sulphuric acid? (a) Orange (b) Violet (c) Green (d) Deep blue

Write the balanced chemical equation for the reaction that occurs in the Haber process for the industrial manufacture of ammonia. Write the conditions of the process. [1 + 2]

For the preparation of N2 gas in the laboratory, the mixed aqueous solution of which of the following two compounds is used? NaNO2 and NH4Cl NaNO3 and NH4Cl NaCI and NH4NO3 NaNO3 and NH4NO3

Why is concentrated H2SO4 not used to dry ammonia gas ?

Write how nitric oxide is produced by the oxidation of ammonia with atmospheric oxygen, mentioning the name of the catalyst and the reaction conditions. Write the balanced chemical equation for the reaction. [2+1]

Write the chemical equation for the reaction between two gases to produce a solid substance.

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

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

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]