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PES SS 2 Chemistry Test 3 Term 1 2025-26
Contributed by: School
  • 1. Which of the following hydrocarbons is not an alkane?
A) C3H6
B) C2H6
C) C7H16
D) C8H18
  • 2. The organic compound with the formula C5H10 is an example of
A) alkanol
B) alkyne
C) alkene
D) alkane
  • 3. Which of the following is not among the characteristics of the homologous series?
A) Members share the same general method of preparation.
B) The physical properties are similar.
C) Successive members differ in molecular formula by an addition of CH2
D) Members have the same general method of preparation.
  • 4. Which of the following is not among the characteristics of organic compounds?
A) Most organic compounds are non-polar.
B) They are mostly covalent.
C) They are generally soluble in water.
D) They are generally soluble in non-polar solvents.
  • 5. Alkyl group has a general molecular formula shown above. Which of the options is an example of alkyl group?
A) C4H9
B) C3H6
C) C5H12
D) C2H6
  • 6. What is catenation?
A) It is the ease with which carbon combines with hydrogen, oxygen etc.
B) It is the ability of carbon to form single, double and tripple covalent bonds.
C) It is the exceptional ability of carbon atoms to combine with one another.
  • 7. Which of the following is an example of alkanol?
A) C3H7OH
B) C3H7COOH
C) C3H7CHO
D) C3H7COCH3
  • 8. Which of the following gases rekindles a glowing splinter?
A) H2
B) Cl2
C) CO2
D) O2
  • 9. Which of the following is not an acidic oxide?
A) Na2O
B) CO2
C) SO2
D) NO2
  • 10. Which of the following is not a basic oxide?
A) SO2
B) Na2O
C) K2O
D) MgO
  • 11. Which of the following is an example of amphoteric oxide?
A) CaO
B) Na2O
C) K2O
D) ZnO
  • 12. Which of the following is an example of neutral oxide?
A) ZnO
B) CO2
C) MgO
D) CO
  • 13. Which of the following is not a type of oxide?
A) amphoteric oxide
B) acidic oxide
C) neutral oxide
D) basic oxide
E) hydrochloric oxide
  • 14. Oxygen is prepared in the laboratory by thermal decomposition of _____
A) potassium tetraoxosulphate (VI)
B) potassium trioxochlorate (V)
C) potassium trioxonitrate (V)
D) potassium trioxocarbonate (IV)
  • 15. What is the role of MnO2 in the thermal decomposition of KClO3 to produce O2? It serves as _____
A) a dehydrating agent
B) a reducing agent
C) a catalyst
D) an oxidizing agent
  • 16. Oxygen is prepared industrially by _____
A) hydrolysis of liquid air
B) thermal decomposition of potassium trioxochlorate (V)
C) fractional distillation of liquid air
D) freezing of liquid air
  • 17. Which of the following is not a physical property of Oxygen?
A) It turns blue litmus paper red
B) It is a colourless, odourless and tasteless gas
C) It is slightly soluble in water
D) Its atomic number is 8 and mass number is 16
  • 18. Which of the following represents a reaction of Oxygen with metals?
A) N2 + 2O2 --> 2NO2
B) CH4 + 2O2 --> CO2 + 2H2O
C) 4Na + O2 --> 2Na2O
D) C + O2 --> CO2
  • 19. The industrial preparation of hydrogen from from water gas is called _________
A) Haber Process
B) Steam Process
C) Bosch Process
D) Contact Process
  • 20. Which of the following is not a physical property of hydrogen?
A) It is slightly soluble in water
B) It turns red litmus paper blue
C) It is colourless, odourless and tasteless
D) It is highly inflammable
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