Page 249 - Chemistry ICSE Class X

Study of Compounds–Ammonia 235
(iii) How is ammonia gas collected?
(iv) Explain why it is not collected over water.
Q 12. State one appropriate observation for the following: [ICSE 2013]
(i) Excess of chlorine gas is reacted with ammonia gas.
Q 13. Copy and complete the following table relating to important industrial process: [ICSE 2013]
Equation for the
Name of the process Temperature Catalyst
catalyzed reaction
Haber’s process

Q 14. Identify the following substances, which is underlined: [ICSE 2013]
(i) An alkaline gas which produces dense white fumes when reacted with hydrogen chloride gas.
Q 15. Fill in the blank from the choices given within brackets: [ICSE 2014]
(i) Ammonia gas is collected by __________ (an upward displacement of air, a downward displacement of
water, a downward displacement of air)
Q 16. Write balanced equation for the following: [ICSE 2014]
Action of warm water on magnesium nitride.
Q 17. State your observation in the following case: [ICSE 2014]
(i) When calcium hydroxide is heated with ammonium chloride crystals.
Q 18. (i) Name the other ion formed when ammonia dissolves in water. [ICSE 2014]
(ii) Give one test that can be used to detect the presence of the ion produced.
Q 19. State the conditions required for catalytic oxidation of ammonia to nitric oxide. [ICSE 2014]
Q 20. State one relevant observation when ammonia gas is burnt in an atmosphere of excess oxygen. [ICSE 2015]
Q 21. Give balanced chemical equations for each of the following: [ICSE 2015]
(i) Lab preparation of ammonia using an ammonium salt
(ii) Reaction of ammonia with excess chlorine
(iii) Reaction of ammonia with sulphuric acid
Q 22. Write balanced chemical equation for the following: [ICSE 2016]
(i) Action of warm water on AlN.
Q 23. Name the gas evolved when the following mixtures are heated: [ICSE 2016]
(i) Calcium hydroxide and ammonium chloride
(ii) Sodium nitrite and ammonium chloride
Q 24. Write balanced chemical equations for each of the following: [ICSE 2016]
(i) When excess of ammonia is treated with chlorine.
(ii) An equation to illustrate the reducing nature of ammonia.
Q 25. Write a balanced chemical equation for each of the following: [ICSE 2017]
(i) Reaction of ammonia with heated copper oxide.
(ii) Laboratory preparation of ammonia from ammonium chloride.
Q 26. State one relevant observation for the following reaction: [ICSE 2017]
(i) Burning of ammonia in air.
Q 27. Certain blank spaces are left in the following table and these are labelled as C, D and E. Identify each of them.
[ICSE 2017]
Lab preparation of Reactants used Products formed Drying agent Method of collection
NH gas C Mg(OH) D E
2
3
__________________ NH 3 __________________ __________________
Q 28. (i) Write the balanced chemical equation to prepare ammonia gas in the laboratory by using an alkali.
(ii) State why concentrated sulphuric acid is not used for drying ammonia gas.
(iii) Why is ammonia gas not collected over water? [ICSE 2018]