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