ICSE CHEMISTRY - PRACTICE PAPER 5

ICSE CHEMISTRY - PRACTICE PAPER 5

a) i) Conc. HNO₃ is a/an ______________ (reducing/oxidizing) agent.

ii) Give balanced equation for the decomposition of Conc . Nitric acid on heating.

iii)State the observation seen when Conc. Nitric acid is heated.

b) i) Name the gas produced when conc. Nitric acid is added to Copper.

ii) Nitric acid prepared in the laboratory appears in yellowish brown. Why?

iii) Conc. HNO₃ oxidises Sulphur to _____________( Sulphuric/sulphurous) acid.

c) i)What is the significance of Conc. HNO₃ mixed with conc. HCl in the ratio 1:3?

ii) Nitric acid is a ______________( volatlie/non volatile) acid.

d) Give reason why:

i) Apparatus used in the preparation of Nitric acid is made of Glass only.

ii) Conc. HCl is not used instead of Conc.H₂SO₄ in the laboratory preparation of Nitric acid.