StudentAidUnit 19: Unit 19: Nitrogen and Sulphur — Mcqs
10th Class Chemistry · Unit 19: Nitrogen and Sulphur
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Choose and tick the correct answer from the given choices.
1.The reason for maintaining higher temperature for the production of ammonia is:
2.The contact process used for the industrial production of H2SO4 is sensitive to the impurities present in SO2 and O2 because the impurities:
3.Which of the following oxides is neutral in character?
4.Sodium is considered more reactive than magnesium because:
5.Secondary pollutants present in the atmosphere are:
6.SO3 is absorbed in H2SO4 rather than H2O during the production of sulphuric acid because:
7.Oxides formed when oxygen reacts with metals:
8.Major components of acid rain are:
SLO Based Multiple Choice Questions
Ammonia
9.Ammonia is one of the most important chemicals produced globally for the large scale production of:
10.By which percent ammonia is used to produce fertilizers:
11.Ammonia produces:
12.Ammonia was produced by a German Chemist ________ for the first time.
13.In Haber process mixture of nitrogen and hydrogen gas is used in the ratio of:
14.Temperature needed for Haber process for ammonia Synthesis is:
- a 200 – 400°C
- b 400 – 500°C
- c 300 – 600°C
- d 200 – 500°C
15.The pressure required to maintain during Ammonia Synthesis is:
16.Catalyst used for ammonia synthesis:
17.Which reaction involves the ammonia synthesis during Haber process:
18.Haber process produces equilibrium mixture which contains about ______ % of ammonia:
- a 25%
- b 35%
- c 45%
- d 50%
19.Liquid ammonia is collected by cooling gas at a temperature:
20.Sources of nitrogen and hydrogen in the Haber process are:
21.Nitrogen from air is collected by a process which is called:
22.During liquefaction air is compressed at about ________ atm pressure:
23.During fractional distillation of air the compressed air is allowed to cool using an apparatus called:
- a Spiral jet
- b Refrigeration coil
- c Cooling tower
- d Refrigeration chamber
24.Boiling point of nitrogen is:
25.The second raw material for Ammonia synthesis other than nitrogen is:
Sulphuric Acid
26.Sulphuric acid, because of its effective role in every industrial product is called:
27.Industrially, sulphuric acid is produced by a process called:
28.The ore from which, sulphur dioxide is obtained for contact process:
29.Purification of Sulphur dioxide is needed in contact process because it may contain:
30.For drying the moist gases which chemical is sprayed in drying tower of contact process:
31.The catalyst used in contact process is:
32.Temperature maintained in contact chamber for synthesis of Sulphur trioxide:
33.2 – 3 atmosphere pressure is required for which step in contact process:
34.Which percentage of sulphuric acid is required for the conversion of SO3 to oleum:
35.Formula of Pyrosulphuric acid or oleum is:
Oxides
36.Binary compounds of elements with oxygen are called:
37.Oxidation state of oxygen in normal oxide:
38.Metal oxides are commonly:
39.Acidic nature of oxides is exhibited generally:
40.In metallic oxide formation electrons are transferred from metals to oxygen so they are:
41.Covalent nature is the one of oxide:
42.Basic oxide change:
43.Which of the following is an acidic oxide?
44.Which oxide form sulphuric acid with water?
45.Which oxide reacts with water to form carbonic acid?
46.Which compound is produced when CO2 reacts with Ca(OH)2?
47.Na2O is classified as:
48.Examples of neutral oxides are:
49.ZnO and aluminium oxide Al2O3, water are all examples of:
50.ZnO reacts with NaOH to form:
51.Sodium Zincate and Aluminates are generally:
- a Soluble in water
- b Insoluble in water
- c Partially soluble
- d Sparingly soluble
Metals
52.Total coverage of metals in the periodic table is:
53.Which metals reacts vigorously with cold water?
54.Which metal react with HCl to produce hydrogen gas?
55.Which metals react explosively with dilute acids?
56.The temperature at which Be and Al react with steam:
- a 500°C
- b 600°C
- c 700°C
- d 800°C
57.Which metal does not react with dil. HCl?
58.Sodium burns in air with color of flame:
59.Color of flame of Magnesium is:
60.Calcium burns in air with flame of color:
61.A pale green colour is the characteristics flame of which metal?
62.Crimson red colour of flame is shown by:
63.Which gas is evolved when metals react with acids?
Reactivity series of metals
64.What do highly reactive metals form with cold water?
65.Which metal reacts very slowly with cold water?
Roles of oxides of nitrogen in spreading air pollution
66.Primary pollutant which are present in atmosphere:
67.Which one is not secondary pollutant?
68.During lightning which gas is produced:
69.Man-made activities which are source of NOx production:
70.Secondary pollutants are produced from primary pollutant after a series of their chemical reaction with: