Page 261 - Chemistry ICSE Class X

Study of Compounds–Nitric Acid 247
Q 13. Explain the following: [ICSE 2015]
(i) Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
(ii) Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
(iii) An all glass apparatus is used in the laboratory preparation of nitric acid.
Q 14. Write the balanced equation for the following: [ICSE 2016]
Action of hot and concentrated nitric acid on copper.
Q 15. Fill in the blanks using the appropriate words given below: [ICSE 2016]
(Sulphur dioxide, Nitrogen dioxide, Nitric oxide, Sulphuric acid)
(i) Cold, dilute nitric acid reacts with copper to give __________ .
(ii) Hot, concentrated nitric acid reacts with sulphur to form __________ .
Q 16. Give a balanced chemical equation for the following: [ICSE 2017]
(i) Action of conc. nitric acid on sulphur.
(ii) Catalytic oxidation of ammonia.
(iii) Laboratory preparation of nitric acid.
(iv) Reaction of ammonia with nitric acid.
(v) Action of cold and dilute nitric acid on copper.
Q 17. Name the gas that is produced in the following cases: [ICSE 2018]
(i) Sulphur is oxidized by concentrated nitric acid.
(ii) Action of cold and dilute nitric acid on copper.
Q 18. (i) What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation
of nitric acid?
(ii) State why for the preparation of nitric acid, the complete apparatus is made up of glass. [ICSE 2018]