Home 9th Chemistry MCQs Sindh Board 9th Chemistry Unit 13 Nitrogen & Oxygen MCQs Sindh Board

9th Chemistry Unit 13 Nitrogen & Oxygen MCQs Sindh Board

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 9th Grade Chemistry Chapter 13 Nitrogen & Oxygen Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 13 Nitrogen & Oxygen Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

9th Chemistry MCQs
Chemistry MCQs

Q.1: When ammonium chloride is heated with a base, the gas liberated is:?
  1. nitric oxide NO
  2. nitrogen
  3. ammonia
  4. oxygen
C
Q.2: The catalyst used for the catalytic oxidation of NH3 in Ostwalds method is:?
  1. nickel
  2. platinum
  3. chromium
  4. vanadium penta oxide
B
Q.3: The boiling point of liquid oxygen is:?
  1. 200oC
  2. 0187.5oC
  3. 183oC
  4. 196oC
C
Q.4: The air we breathe in, usually contains a higher proportion of:?
  1. oxygen
  2. carbon dioxide
  3. nitrogen
  4. water vapours
C
Q.5: Which one of the following is the easy way to distinguish ozone from oxygen.?
  1. by comparing allotropic forms
  2. by comparing their oxidizing properties
  3. by comparing their odours
  4. by comparing their solubilitys
C
Q.6: The most abundant element found in nature is:?
  1. nitrogen
  2. silicon
  3. hydrogen
  4. oxygen
B
Q.7: Urea is produced by heating carbon dioxide CO2 with?
  1. potassium nitrate
  2. hydrogen
  3. nitric acid
  4. ammonia
D
Q.8: Hydrogen peroxide is produced in the laboratory by heating sulphuric acid with:?
  1. potassium peroxide
  2. sodium peroxide
  3. barium peroxide
  4. strontium peroxide
C
Q.9: Oxygen contains in its valence shell:?
  1. 8 electrons
  2. 6 electrons
  3. 5 electrons
  4. 2 electrons
B
Q.10: By mass of water oxygen constitutes?
  1. 89.8%
  2. 80.8%
  3. 86.8%
  4. 88.8%
D
Q.11: Oxygen can be prepared in the laboratory by heating?
  1. Fe2O3
  2. KNO3
  3. CaO
  4. KCIO3
D
Q.12: CO2 is the example of?
  1. Sub oxides
  2. Normal oxides
  3. Acidic oxides
  4. Super oxides
D
Q.13: Ozone oxidizes Pbs to?
  1. PbO
  2. Pb(NO3)2
  3. PbCl2
  4. PbSO4
A
Q.14: Formula of Sodium peroxide is?
  1. Na2O2
  2. Na2O
  3. NaO2
  4. NaO
A
Q.15: Oxygenated water is another name of?
  1. HNO3
  2. HCI
  3. H2SO4
  4. H2O2
D
Q.16: NaCl is used for initiating?
  1. Halogenations
  2. Nitration
  3. Polymerization reaction
  4. Oxidation reaction
C
Q.17: Ozone was discovered by?
  1. Lavoiser
  2. Schonbein
  3. J.Soret
  4. Scheel
B
Q.18: Chaptal named the gas?
  1. Chlorine
  2. Nitrogen
  3. Ozone
  4. Oxygen
B
Q.19: Nitrogen belongs to?
  1. II b group
  2. VIA group
  3. VB group
  4. VA group
D
Q.20: By mass of the earths atmosphere N2 is?
  1. 75%
  2. 71%
  3. 72%
  4. 78%
A
Q.21: Formula of Carbon Suboxide is?
  1. C3O2
  2. C2O2
  3. C2O3
  4. C2O5
A
Q.22: Ammonia gas is collected by ---------- delivery downward displacement of air as it is a lighter gas than air.?
  1. Indirect
  2. Direct
  3. Upward
  4. Downward
C
Q.23: The biggest use of ammonia is in the manufacture of:?
  1. Nitrogen trichioride
  2. Nitric acid
  3. Fertilizers
  4. Nitrogen
A
Q.24: Loss of electrons is:?
  1. Redox
  2. Oxidation
  3. Reduction
  4. None of them
C
Q.25: Gain of electrons is:?
  1. Reduction
  2. Redox
  3. Oxidation
  4. None of them
D
Q.26: Ozone liquefies at:?
  1. 112oC
  2. 182oC
  3. 212oC
  4. 282oC
C
Q.27: When ammonium chloride is heated with a base, the gas liberated is:?
  1. Nitrogen
  2. Ammonia
  3. Nitric oxide NO
  4. Oxygen
C
Q.28: The most abundant element found in nature is:?
  1. Silicon
  2. Oxygen
  3. Hydrogen
  4. Nitrogen
B
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