Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
EEEE
EEEE Time Allowed – 3 hrs
General Instructions:
(i) Answers to this Paper must be written on the paper
provided separately.
(ii) The time given at the head of this Paper is the time allowed
for writing the answers.
MULTIPLE CHOICE QUESTIONS:
Choose the correct answer from the options given below:
1. Which of the following is not a physical property of hydrogen chloride?
a. The gas fumes in moist air. b. It has pungent suffocating smell
c. It is insoluble in water d. It is heavier than air
2. Ammonia can be obtained by adding nitrogen to hydrogen in the presence of :
a. iron and molybdenum b. iron and platinum
c. molybdenum and platinum d. platinum and silver
3. An acid which is monobasic:
a. HCl
b. HNO3
c. HCOOH
d. all of the above
4. Promoter used in contact process is _________.
a. V2O5 b. quartz c. Fe(OH)3 d. K2SO4
5. In the laboratory preparation, HCl gas is dried by passing through
a. dilute nitric acid b. concentrated sulphuric acid
c. dilute sulphuric acid d. acidified water
6. The formula of chile saltpetre is
a. KNO3 b. NaNO3 c. HNO3 d. none of these
7. Name the drying agent used for purifying hydrogen chloride gas.
a. Conc. nitric acid b. Conc. hydrochloric acid
c. Conc. sodium hydroxide d. Conc. sulphuric acid
8. In the laboratory preparation, slaked lime is used because it is:
a. deliquescent b. not deliquescent
c. volatile d. non-volatile
9. Basicity of sulphuric acid is________.
a. 1 b. 2 c. 3 d. 4
10. The laughing gas is
a. nitrous oxide b. nitric oxide
c. nitrogen mono oxide d. none of these
11. Hydrogen chloride gas is not collected over water, as
a. it is highly soluble in water b. it is less soluble in water
c. it is lighter than air d. it is heavier than air
12. Which process is used for the preparation of nitric acid?
a. Ostwald’s process b. Contact process
c. Haber’s process d. Fountain process
Rajdeep Ghosh Chemistry Classes
Page 1
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
EEEE
13. HCl acts as reducing agent because
c.EEEE
a. it oxidises strong reducing agents b. it can be oxidised to chlorine by strong reducing agents
it oxidises strong oxidising agents d. it can be oxidised to chlorine by strong oxidising agents
14. When ammonia gas is treated with excess of chlorine, the products formed are:
a. ammonium chloride and nitrogen b. hydrogen chloride and nitrogen trichloride
c. hydrogen chloride and nitrogen d. nitric oxide and nitrogen
15. Oleum is also known as___________.
a. pyro sulphuric acid b. anhydrous sulphuric acid
c. oil of vitriol d. none of these
16. The brown ring test is used for detection of__________.
a. CO32- b. NO3- c. SO32- d. Cl-
17. Hydrogen chloride gas being highly soluble in water is dried by
a. anhydrous calcium chloride b. phosphorus pentoxide
c. quick lime d. concentrated sulphuric acid
18. The ratio of ammonia and air taken in Ostwald’s process is
a. 1:10 b.10:1 c.1:3 d.3:1
19. Which of the following is true regarding about nitric acid?
a. It is a strong reducing agent. b. It is a strong oxidising agent.
c. The commercial nitric acid 98% concentration is yellowish brown in colour. d. It is stable to heat and sunlight.
20. When sulphuric acid reacts with zinc sulphide, the gas evolved is:
a. SO2 b.H2 c. SO3 d. H2S
21. Assertion (A): Concentrated sulphuric acid gives blister on skin.
Reason(R): It removes water from the skin.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
22. Assertion (A): Dry hydrogen chloride gas is collected by the upward displacement of air.
Reason(R): Hydrogen chloride gas is lighter than air.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
23. Nitrogen gas can be obtained by heating
a. ammonium nitrate b. ammonium nitrite
c. magnesium nitride d. ammonium chloride
24. Identify the name of the industrial process to manufacture nitric acid.
a. Contact process b. Solvay process
c. Ostwald’s process d. Haber-Bosch process
25. Hydrogen chloride gas on dissolving in water produces:
a. strong dibasic acid b. weak dibasic acid
c. strong monobasic acid d. weak monobasic acid
26. __________gas used in Haber’s process is obtained by fractional distillation of air.
a. N2 b. H2 c. both a and b d. none of these
27. Nitric acid is manufactured by ___________.
a. contact process b. Ostwald’s process
c. Haber’s process d. none of these
28. The acid which can produce carbon from cane sugar, is:
a. concentrated hydrochloric acid b. concentrated nitric acid
c. concentrated sulphuric acid d. concentrated acetic acid
Rajdeep Ghosh Chemistry Classes
Page 2
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
29.EEEE
The gas formed when sodium sulphite reacts with HCl is:
EEEE
a. oxygen
c. hydrogen
b. chlorine
d. sulphur dioxide
30. When excess of ammonia is chlorine gas, the products formed are:
a. ammonium chloride and water b. nitric oxide and water
c. ammonium chloride and nitrogen d. ammonium chloride and nitrogen dioxide
31. Name the catalyst used in the industrial manufacture of nitric acid.
a. powdered iron (III) oxide b. zinc mercury amalgam
c. vanadium (V) oxide d. platinum-rhodium gauze sheet
32. When concentrated sulphuric acid reacts with potassium nitrate, the salt formed is:
a. potassium bisulphate b. potassium sulphate
c. potassium nitrite d. potassium sulphite
33. The aim of the fountain experiment is to prove that
a. HCl turns blue litmus red b. HCl is denser than air
c. HCl is highly soluble in water d. HCl fumes in moist air
34. Ammonia can be obtained by adding water to
a. ammonium chloride b. ammonium nitride
c. magnesium nitride d. magnesium nitrate
35. Name the oxidising agent used in Ostwald’s process.
a. NO b. NO2 c. CO d. O2
36. The catalyst preferred in the conversion of sulphur dioxide to sulphur trioxide is
a. finely divided iron b. graphite
c. vanadium pentoxide d. platinum
37. The drying agent used to dry HCl gas is:
a. conc. H2SO4 b. ZnO c.Al2O3 d. CaO
38. Which of the following is NOT true with respect to nitric acid?
a. It is a strong reducing agent. b. It is a strong oxidising agent.
c. It is unstable to heat. d. It liberates sulphur dioxide when treated with potassium sulphite.
39. The optimum pressure in Haber’s process is:
a. above 1300 atm b. below 200 atm
c. above 200 atm d. none of these
40. In the reaction given below, sulphuric acid acts as a/an:
S + 2H2SO4 → 3SO2 + 2H2O
a. non-volatile acid b. dibasic acid
c. oxidising agent d. reducing agent
41. HCl can be dried only by
a. conc. sulphuric acid b. calcium oxide
c. phosphorus pentoxide d. potassium permanganate
42. What is the Nitric acid-water composition by mass, respectively, for the components to form an azeotrope?
a. 70% - 30% b. 68% - 32% c. 30% - 70% d. 32% - 68%
43. When ammonia gas is passed over heated copper oxide the products formed are:
a. copper, nitrogen and hydrogen b. copper, nitrogen oxide and water
c. copper, nitrogen and water d. cuprous oxide, nitrogen and water
44. When dilute sulphuric acid reacts with magnesium, the gas evolved is :
a. O2 b. H2 c. SO2 d. H2S
Rajdeep Ghosh Chemistry Classes
Page 3
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
45.EEEE
Given below are 4 different illustrations of preparing hydrochloric acids drawn by students. Which of these is the
a. EEEE
correct option?
b.
Water
c. d.
Water
46. Assertion (A): Pure nitric acid is very stable.
Reason(R): Pure nitric acid decomposes slightly even at ordinary temperature and in the presence of sunlight.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
47. Assertion (A): Haber’s process is used to manufacture hydrochloric acid.
Reason(R): The catalyst used in this process is finely divided iron.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
48. Assertion (A): Hydrogen chloride gas can be prepared by heating metallic chloride with conc. sulphuric acid.
Reason(R): The temperature required for this process is always above 200° C.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
49. Prateek added warm water to magnesium nitride and a colourless gas evolved which when tested with
phenolphthalein, turned it pink. The gas evolved is
a. carbon dioxide b. ammonia
c. nitrogen d. hydrogen chloride
50. These reactions are used in the manufacture of sulphuric acid.
(P) S + O2 → SO2
(Q) 2SO2 + O2 ⇋ 2SO3
(R) SO3 + H2O → H2SO4
Which reactions are speeded up by using a catalyst?
a. only P b. only Q c. only R d. Q and R
51. White precipitate of lead sulphur is obtained by treating aqueous lead nitrate with dilute:
a. sulphuric acid b. nitric acid
c. hydrochloric acid d. none of these
Rajdeep Ghosh Chemistry Classes
Page 4
Mail id – / Ph no-9831293295
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
EEEE
EEEE Time Allowed – 3 hrs
General Instructions:
(i) Answers to this Paper must be written on the paper
provided separately.
(ii) The time given at the head of this Paper is the time allowed
for writing the answers.
MULTIPLE CHOICE QUESTIONS:
Choose the correct answer from the options given below:
1. Which of the following is not a physical property of hydrogen chloride?
a. The gas fumes in moist air. b. It has pungent suffocating smell
c. It is insoluble in water d. It is heavier than air
2. Ammonia can be obtained by adding nitrogen to hydrogen in the presence of :
a. iron and molybdenum b. iron and platinum
c. molybdenum and platinum d. platinum and silver
3. An acid which is monobasic:
a. HCl
b. HNO3
c. HCOOH
d. all of the above
4. Promoter used in contact process is _________.
a. V2O5 b. quartz c. Fe(OH)3 d. K2SO4
5. In the laboratory preparation, HCl gas is dried by passing through
a. dilute nitric acid b. concentrated sulphuric acid
c. dilute sulphuric acid d. acidified water
6. The formula of chile saltpetre is
a. KNO3 b. NaNO3 c. HNO3 d. none of these
7. Name the drying agent used for purifying hydrogen chloride gas.
a. Conc. nitric acid b. Conc. hydrochloric acid
c. Conc. sodium hydroxide d. Conc. sulphuric acid
8. In the laboratory preparation, slaked lime is used because it is:
a. deliquescent b. not deliquescent
c. volatile d. non-volatile
9. Basicity of sulphuric acid is________.
a. 1 b. 2 c. 3 d. 4
10. The laughing gas is
a. nitrous oxide b. nitric oxide
c. nitrogen mono oxide d. none of these
11. Hydrogen chloride gas is not collected over water, as
a. it is highly soluble in water b. it is less soluble in water
c. it is lighter than air d. it is heavier than air
12. Which process is used for the preparation of nitric acid?
a. Ostwald’s process b. Contact process
c. Haber’s process d. Fountain process
Rajdeep Ghosh Chemistry Classes
Page 1
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
EEEE
13. HCl acts as reducing agent because
c.EEEE
a. it oxidises strong reducing agents b. it can be oxidised to chlorine by strong reducing agents
it oxidises strong oxidising agents d. it can be oxidised to chlorine by strong oxidising agents
14. When ammonia gas is treated with excess of chlorine, the products formed are:
a. ammonium chloride and nitrogen b. hydrogen chloride and nitrogen trichloride
c. hydrogen chloride and nitrogen d. nitric oxide and nitrogen
15. Oleum is also known as___________.
a. pyro sulphuric acid b. anhydrous sulphuric acid
c. oil of vitriol d. none of these
16. The brown ring test is used for detection of__________.
a. CO32- b. NO3- c. SO32- d. Cl-
17. Hydrogen chloride gas being highly soluble in water is dried by
a. anhydrous calcium chloride b. phosphorus pentoxide
c. quick lime d. concentrated sulphuric acid
18. The ratio of ammonia and air taken in Ostwald’s process is
a. 1:10 b.10:1 c.1:3 d.3:1
19. Which of the following is true regarding about nitric acid?
a. It is a strong reducing agent. b. It is a strong oxidising agent.
c. The commercial nitric acid 98% concentration is yellowish brown in colour. d. It is stable to heat and sunlight.
20. When sulphuric acid reacts with zinc sulphide, the gas evolved is:
a. SO2 b.H2 c. SO3 d. H2S
21. Assertion (A): Concentrated sulphuric acid gives blister on skin.
Reason(R): It removes water from the skin.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
22. Assertion (A): Dry hydrogen chloride gas is collected by the upward displacement of air.
Reason(R): Hydrogen chloride gas is lighter than air.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
23. Nitrogen gas can be obtained by heating
a. ammonium nitrate b. ammonium nitrite
c. magnesium nitride d. ammonium chloride
24. Identify the name of the industrial process to manufacture nitric acid.
a. Contact process b. Solvay process
c. Ostwald’s process d. Haber-Bosch process
25. Hydrogen chloride gas on dissolving in water produces:
a. strong dibasic acid b. weak dibasic acid
c. strong monobasic acid d. weak monobasic acid
26. __________gas used in Haber’s process is obtained by fractional distillation of air.
a. N2 b. H2 c. both a and b d. none of these
27. Nitric acid is manufactured by ___________.
a. contact process b. Ostwald’s process
c. Haber’s process d. none of these
28. The acid which can produce carbon from cane sugar, is:
a. concentrated hydrochloric acid b. concentrated nitric acid
c. concentrated sulphuric acid d. concentrated acetic acid
Rajdeep Ghosh Chemistry Classes
Page 2
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
29.EEEE
The gas formed when sodium sulphite reacts with HCl is:
EEEE
a. oxygen
c. hydrogen
b. chlorine
d. sulphur dioxide
30. When excess of ammonia is chlorine gas, the products formed are:
a. ammonium chloride and water b. nitric oxide and water
c. ammonium chloride and nitrogen d. ammonium chloride and nitrogen dioxide
31. Name the catalyst used in the industrial manufacture of nitric acid.
a. powdered iron (III) oxide b. zinc mercury amalgam
c. vanadium (V) oxide d. platinum-rhodium gauze sheet
32. When concentrated sulphuric acid reacts with potassium nitrate, the salt formed is:
a. potassium bisulphate b. potassium sulphate
c. potassium nitrite d. potassium sulphite
33. The aim of the fountain experiment is to prove that
a. HCl turns blue litmus red b. HCl is denser than air
c. HCl is highly soluble in water d. HCl fumes in moist air
34. Ammonia can be obtained by adding water to
a. ammonium chloride b. ammonium nitride
c. magnesium nitride d. magnesium nitrate
35. Name the oxidising agent used in Ostwald’s process.
a. NO b. NO2 c. CO d. O2
36. The catalyst preferred in the conversion of sulphur dioxide to sulphur trioxide is
a. finely divided iron b. graphite
c. vanadium pentoxide d. platinum
37. The drying agent used to dry HCl gas is:
a. conc. H2SO4 b. ZnO c.Al2O3 d. CaO
38. Which of the following is NOT true with respect to nitric acid?
a. It is a strong reducing agent. b. It is a strong oxidising agent.
c. It is unstable to heat. d. It liberates sulphur dioxide when treated with potassium sulphite.
39. The optimum pressure in Haber’s process is:
a. above 1300 atm b. below 200 atm
c. above 200 atm d. none of these
40. In the reaction given below, sulphuric acid acts as a/an:
S + 2H2SO4 → 3SO2 + 2H2O
a. non-volatile acid b. dibasic acid
c. oxidising agent d. reducing agent
41. HCl can be dried only by
a. conc. sulphuric acid b. calcium oxide
c. phosphorus pentoxide d. potassium permanganate
42. What is the Nitric acid-water composition by mass, respectively, for the components to form an azeotrope?
a. 70% - 30% b. 68% - 32% c. 30% - 70% d. 32% - 68%
43. When ammonia gas is passed over heated copper oxide the products formed are:
a. copper, nitrogen and hydrogen b. copper, nitrogen oxide and water
c. copper, nitrogen and water d. cuprous oxide, nitrogen and water
44. When dilute sulphuric acid reacts with magnesium, the gas evolved is :
a. O2 b. H2 c. SO2 d. H2S
Rajdeep Ghosh Chemistry Classes
Page 3
Mail id – / Ph no-9831293295
, Dr.Rajdeep Ghosh(MSc. Chemistry)
ICSE CHEMISTRY- X (M.Tech.) , PhD (Chemical Engineering )
University of Calcutta
45.EEEE
Given below are 4 different illustrations of preparing hydrochloric acids drawn by students. Which of these is the
a. EEEE
correct option?
b.
Water
c. d.
Water
46. Assertion (A): Pure nitric acid is very stable.
Reason(R): Pure nitric acid decomposes slightly even at ordinary temperature and in the presence of sunlight.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
47. Assertion (A): Haber’s process is used to manufacture hydrochloric acid.
Reason(R): The catalyst used in this process is finely divided iron.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
48. Assertion (A): Hydrogen chloride gas can be prepared by heating metallic chloride with conc. sulphuric acid.
Reason(R): The temperature required for this process is always above 200° C.
a. Both (A) and (R) are true and (R) is the correct explanation of (A)
b. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
c. (A) is true but (R) is false
d. (A) is false but (R) is true
49. Prateek added warm water to magnesium nitride and a colourless gas evolved which when tested with
phenolphthalein, turned it pink. The gas evolved is
a. carbon dioxide b. ammonia
c. nitrogen d. hydrogen chloride
50. These reactions are used in the manufacture of sulphuric acid.
(P) S + O2 → SO2
(Q) 2SO2 + O2 ⇋ 2SO3
(R) SO3 + H2O → H2SO4
Which reactions are speeded up by using a catalyst?
a. only P b. only Q c. only R d. Q and R
51. White precipitate of lead sulphur is obtained by treating aqueous lead nitrate with dilute:
a. sulphuric acid b. nitric acid
c. hydrochloric acid d. none of these
Rajdeep Ghosh Chemistry Classes
Page 4
Mail id – / Ph no-9831293295
