PES SS 2 Chemistry 2nd Term Exam (Obj) 2025/2026
  • 1. Solubility is expressed in ______
A) g/mol
B) mol/dm3
C) dm3
D) mol/dm-3
  • 2. A solubility curve shows _____
A) How much substance is dissolved
B) The variation of solubility of a substance with temperature
C) The way a solute dissolves
D) The variation of solubility of a substance with volume
  • 3. Which of the following has two geometric isomers?
A) Butane
B) But-1-yne
C) But-2-ene
D) But-2-yne
  • 4. Geometric isomer is common among ____________
A) Alkynes
B) Alkanes
C) Alkanols
D) Alkenes
  • 5. The molecular formula for glycerol is____
A) RCOONa
B) C3H5(OOCR)_3
C) C2H4
D) C3H5(OH)_3
  • 6. Which of the following is not needed in the laboratory preparation of soap?
A) Salt solution
B) Baking soda
C) Palm oil
D) Distilled water
  • 7. Which of the following is not a type of soap?
A) Toilet soap
B) Water soap
C) Transparent soap
D) Hard soap
  • 8. When soap is added to dirty fabric, _____ penetrate greasy dirt.
A) Hydrophobic tails
B) Hydrophilic heads
C) Soap foam
D) Soap molecules
  • 9. ____ remain suspended in water and are rinsed away while washing.
A) Micelles
B) Hydrophilic heads
C) Hydrophobic tails
D) Soap molecules
  • 10. Detergents are made from ____
A) Ashes
B) Baking soda
C) Petroleum hydrocarbons
D) Dried soaps
  • 11. Which of the following is not a use of soap?
A) Shaving creams
B) Shampoos
C) Bathing
D) Emulsifying oils
  • 12. Which of the following is not a use of detergents?
A) Dishwashing liquids
B) Laundry powders
C) Shaving creams
D) Shampoos
  • 13. The mass of an alpha particles is _________
A) No mass
B) 6 units
C) 4 units
D) 1/1840 unit
  • 14. The electrical charge on beta particles is ________
A) +1
B) It has no charge.
C) -1
D) +2
  • 15. The relative penetration of gamma rays is __________
A) 1
B) 100
C) 10 000
D) 10
  • 16. Half-life shows ____ a radioactive substance decays.
A) Why
B) If
C) How fast or slow
D) How much
  • 17. Which of the following is not a halogen?
A) Fluorine
B) Chlorine
C) Iodine
D) Tin
  • 18. Iodine is a____
A) Pale yellow gas
B) Reddish brown liquid
C) Greenish yellow gas
D) Grey crystalline solid
  • 19. Alkali metals react with oxygen to produce ____
A) Oxygen gas
B) Oxides, peroxides, superoxides.
C) Hydrogen gas
D) Trioxonitrates
  • 20. Which of the following can be used in producing red fireworks?
A) Magnesium
B) Calcium
C) Strontium
D) Radium
  • 21. Alkaline earth metals react with acids to release ___________
A) Oxygen gas
B) Carbon dioxide
C) Hydrogen gas
D) Nitrogen gas
  • 22. Transition elements are ____ elements.
A) d-block
B) f-block
C) p-block
D) s-block
  • 23. The following are examples of transition elements except ____
A) Rubidium
B) Cobalt
C) Iron
D) Nickel
  • 24. The general electronic configuration for transition elements is ___________
A) They do not have electronic configuration
B) (n-1)d1-10ns0-2
C) 1s2 2s2
D) (n-2)d1-10ns0-1
  • 25. The following are oxidation states of chromium except ________
A) -2
B) +6
C) +2
D) +3
  • 26. When metals are extracted from ores, they are not usually ____
A) Big
B) Much
C) Solid
D) Pure
  • 27. Which of the following is most abundant in the universe ( ~70% of universe's mass)?
A) Nitrogen
B) Oxygen
C) Hydrogen
D) Carbon
  • 28. Hydrogen burns in oxygen with a ____ flame to form water.
A) Pale blue
B) Pale yellow
C) Orange
D) Red
  • 29. Which of the following reduces metal oxides to metals?
A) Carbon dioxide
B) Hydrogen
C) Nitrogen
D) Water
  • 30. Which of the following reacts slowly with cold water?
A) Carbon
B) Hydrogen
C) Calcium
D) Nitrogen
  • 31. Alkaline earth metals react with hydrogen to form____
A) Oxygen gas
B) Oxides
C) Hydrogen gas
D) Ionic halides
  • 32. Which of the following is used in making ceramics?
A) Magnesium
B) Aluminium
C) Barium
D) Strontium
  • 33. Which for the following can be used for cancer treatment?
A) Radium
B) Chromium
C) Iron
D) Argon
  • 34. Which of the following can be used in making fertilizers?
A) Argon
B) Radium
C) Iron
D) Calcium
  • 35. Which of the following is used in making building materials?
A) Argon
B) Calcium
C) Potassium
D) Magnesium
  • 36. Unstable atoms are called____
A) Particles
B) Radioisotopes
C) Rays
D) Nuclei
  • 37. Which of the following shows a solubility curve with a sharp break at 36oC?
A) H2SO4
B) NaCl
C) Na2SO4
D) HCl
  • 38. Early detergents contained ____ hydrocarbons.
A) Chained
B) Straight
C) Cyclic
D) Branched
  • 39. Modern detergents are made from____ hydrocarbons.
A) Chained
B) Cyclic
C) Branched
D) Linear
  • 40. Soaps are____ biodegradable.
A) Partly
B) None of the above
C) Fully
D) Not
Students who took this test also took :

Created with That Quiz — where test making and test taking are made easy for math and other subject areas.