Study of Compounds B. Ammonia Assertion Reason Questions for ICSE Chemistry Class 10. This Assertion (A) Reason (R) type Questions is very helpful for this year students.
Question No. 1 and 20 consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, and R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true
Que 1) Assertion: Relative molecular mass of ammonia is 17.
Reason: Ammonia is present in small amount in air and traces in natural water.
Que 2) Assertion: In preparation of ammonia gas, it is passes through a drying tower containing CaO.
Reason: This process is carried out to get dry ammonia gas.
Que 3) Assertion: Ammonium chloride and calcium hydroxide is mixed together to obtain ammonia.
Reason: Liquid ammonia can be prepared by this method.
Que 4) Assertion: Ammonia and ammonium compounds commonly occur in the minerals.
Reason: Ammonia also occur in combined forms of many compounds such as ammonium chloride, ammonium sulphate.
Que 5) Assertion: By the action of warm water on nitrides of metal like magnesium ammonia gas is produced.
Reason: The drying tower filled with CaO is used to dry the Ammonia gas.
Que 6) Assertion: Calcium Hydroxide is used in the process of collection of ammonia gas.
Reason: Calcium hydroxide is cheap and not deliquescent like other alkalis.
Que 7) Assertion:In the process of preparation of aqueous ammonia nitrogen is obtained by fractional distillation of liquid air
Reason: In the process of preparation of aqueous ammonia nitrogen and hydrogen used in the ratio of 1:3.
Que 8) Assertion: Temperature required in preparation of aqueous ammonia is about 1500C
Reason: Pressure required in preparation of aqueous ammonia is 200 atm.
Que 9) Assertion: Haber’s process is used to prepare aqueous ammonia.
Reason: In Haber’s process 50 percent reacting gases converted to ammonia.
Que 10) Assertion: Ammonia is recovered by liquification process in Haber’s process.
Reason: Ammonia is liquified easily as compared to nitrogen and hydrogen.
Que 11) Assertion: Ammonia shows strong pungent choking smell.
Reason: Ammonia shows alkaline nature.
Que 12) Assertion: Ammonia is poisonous gas.
Reason: If ammonia is inhaled, affects the respiratory system and brings tears to eyes.
Que 13) Assertion: In process of recovery of ammonia water is used to soluble the ammonia.
Reason: Ammonia is highly soluble water, while nitrogen and hydrogen are very slightly soluble
Que 14) Assertion: Nitrogenous fertilizers like ammonium sulphate can be prepared from ammonia.
Reason: Explosives like ammonium nitrate can be prepared from ammonia.
Que 15) Assertion: To show high solubility of ammonia gas in water fountain experiment is perform.
Reason: Red fountain is shown in fountain experiment.
Que 16) Assertion: Ammonia used to produce nylon, rayon, plastics, dyes.
Reason: Ammonium salts such as ammonium chloride used in dry cells.
Que 17) Assertion: The purification of nitrogen and hydrogen is necessary.
Reason: The carbon dioxide, traces of sulphur compounds poison the action of catalyst.
Que 18) Assertion: InHaber’s process the reaction is exothermic and the optimum temperature for this reaction is about 450-5000C
Reason: : In Haber’s process the reaction is carried out at low pressure.
Que 19) Assertion: Liquid ammonia is used as a refrigerant in ice plant.
Reason: The main refrigerant used are freon CFC and it causes global warming.
Que 20) Assertion:Aqueous form of ammonia is act as weak base.
Reason: In aqueous form of ammonia there is lone pair of electrons on its nitrogen atom.
ANSWERS
1) B 6) A 11) C 16) B
2) A 7) B 12) D 17) A
3)C 8) D 13) A 18) C
4) D 9) C 14) B 19) A
5) B 10) A 15) C 20) A