9th Class Chemistry Board Pattern Paper 2026

Q1. Multiple choice questions (Attempt all · 60 × 0.5 = 30)

1. Which is/are responsible for acid rain?
   1. SO₂
   2. NO₂
   3. Both NO₂ and SO₂
   4. O₃
2. Which is not released in an aerobic respiration?
   1. Carbon dioxide
   2. Water
   3. Energy
   4. Lactic acid
3. Combustion of methane produces:
   1. Carbon dioxide
   2. Water
   3. Heat
   4. All of these
4. CH3–CH2–CH3 is the chemical formula for:
   1. Ethane
   2. Propane
   3. Butane
   4. Pentane
5. What is eutrophication caused by?
   1. low phosphate concentration
   2. high concentration
   3. increase water flow
   4. improved water clarity
6. What is the mass of carbon present in 44 g of carbon dioxide?
   1. 12 g
   2. 6 g
   3. 24 g
   4. 44 g
7. Differentiate between accuracy and precision.
8. Which substance would have a higher rate of evaporation?
   1. water at 10 ºC
   2. water at 20 ºC
   3. water at 5 ºC
   4. water at 30 ºC
9. Benzene is:
   1. Polar compound
   2. Non-polar compound
   3. Homoatomic compound
   4. Monoatomic compound
10. Consider the reaction: H₂O + HCl ⇌ H₃O⁺ + Cl⁻. Which species is a proton acceptor in this reaction?
    1. H₂O
    2. HCl
    3. H₃O⁺
    4. none
11. Concentration of reactants and products at equilibrium remains unchanged if:
    1. concentration of any reactant or product is not changed
    2. temperature of the reaction is not changed.
    3. pressure or volume of the system is not changed.
    4. all of the above are observed.
12. Meat and fish provide:
    1. Carbohydrates
    2. Proteins
    3. Lipids
    4. Sugar
13. Who discovered atomic number?
    1. Moseley
    2. Bohr
    3. Rutherford
    4. Cannizaro
14. Which isotope is commonly used to irradiate cancer cells?
    1. Iodine-123
    2. Carbon-14
    3. Cobalt-60
    4. Iodine-131
15. Pure Form of matter having particular characteristics is called:
    1. Mixture
    2. Substance
    3. Both a & b
    4. None of these
16. Which gas turns lime water milky?
    1. ammonia
    2. carbon dioxide
    3. oxygen gas
    4. sulphur dioxide gas
17. Standard form of 38000000000 is:
    1. 3.8×10⁸
    2. 3.8×10⁹
    3. 3.8×10¹²
    4. 3.8×10¹⁰
18. Oxidation involves:
    1. loss of electrons
    2. gain of electron
    3. gain of hydrogen
    4. none of these
19. The normal rain has pH:
    1. 5.6
    2. 6.5
    3. 4.6
    4. 4.2
20. If the value is negative then reaction will be:
    1. Exothermic
    2. Endothermic
    3. May or may not be Exothermic or Endothermic
    4. None of these
21. Reduction of chloromethane gives:
    1. Hydrogen
    2. Chlorine
    3. Methane
    4. All of these
22. Condensed structural formula for butane is:
    1. CH₃–CH₂–CH₃
    2. CH₃–CH₂–CH₂–CH₃
    3. CH₃–CH₂–CH₂–CH₂–CH₃
    4. CH₃–CH₃
23. What is a commonly application of tap water in a chemistry laboratory?
    1. preparing chemical reagents
    2. calibration of sensors
    3. cleaning glasswater
    4. measuring pH level
24. Number of particles in one mole of a substance is called:
    1. Atomic number
    2. Particle number
    3. Avogadro’s number
    4. Mass number
25. List some properties of water?
26. What happens to a liquid in an enclosed space during evaporation until saturation in reached:
    1. it solidifies
    2. it remains constant
    3. it evaporates completely
    4. it continues to vaporize
27. The atoms having less than 2 or 8 electrons in their valence shell are:
    1. Stable
    2. Inreactive
    3. Unstable
    4. Noble gases
28. Milk of magnesia contains Mg(OH)₂. It is used as antacid. It neutralizes excess stomach acid. Which salt is formed in this reaction?
    1. MgSO₄
    2. MgCO₃
    3. MgCl₂
    4. MgO
29. Which is true about the equilibrium state?
    1. The forward reaction stops.
    2. The reverse reaction stops.
    3. Both forward and reverse reaction stop.
    4. Both forward and reverse reaction continue at the same rate.
30. Which foods are rich in fats?
    1. Rice & maize
    2. Pulses & wheat
    3. Milk, egg & beans
    4. Cheese, butter & oil
31. Which of the following elements belongs to VIII A?
    1. Na
    2. Mg
    3. Br
    4. Xe
32. The force present between nucleus and electron is electrostatic force of :
    1. Attraction
    2. Repulsion
    3. Both a, b
    4. None of these
33. Anything that has mass and occupies space is called.
    1. liquid
    2. gas
    3. solid
    4. matter
34. Which gas turns starch iodide paper blue-black?
    1. ammonia
    2. carbon dioxide
    3. chlorine gas
    4. oxygen gas
35. 1 kilometer means:
    1. 100 m
    2. 1000 cm
    3. 1000 cm
    4. 1000 m
36. Oxidation is shown by:
    1. metals
    2. non-metals
    3. both a and b
    4. none of these
37. What air pollution is released by forest fires and storms?
    1. Smoke
    2. Ash
    3. Methane
    4. Nitrogen oxides
38. Activation energy of a chemical reaction must be ________ the average kinetic energy of reacting molecules.
    1. Lower than
    2. greater than
    3. equal to
    4. None of these
39. Which product is obtained when chloromethane is reduced?
    1. Ethane
    2. Ethene
    3. Methane
    4. Ethyne
40. The functional group of amines is:
    1. –OH
    2. –COOH
    3. –NH₂
    4. –CHO
41. What process is used to purify water to produce distilled water?
    1. filtration
    2. distillation
    3. reverse osmosis
    4. sedimentation
42. What is the molar mass of H₃PO₄?
    1. 58.5
    2. 98
    3. 40
    4. 48
43. Fatima has fond of junk food like French fries, burgers, and pizza. What will happen if Fatima only eats junk food? What should she add to her routine food?
44. Which process involves the formation of stalagmites and stalactities in cave?
    1. filtration
    2. crystallization
    3. distillation
    4. evaporation
45. Which of the following is not true about the formation of Na₂S:
    1. Each sodium atom loses one electron
    2. Sodium forms cation
    3. Sulphur forms anion
    4. Each sulphur atom gains one electron
46. Which of the following cannot be classified as Arrhenius acid?
    1. HNO₃
    2. H₂CO₃
    3. CO₂
    4. H₂SO₄
47. Which of the following does not happen, when a system is at equilibrium state?
    1. forward and reverse reactions stop.
    2. forward and reverse rates become equal.
    3. concentration of reactants and products stop changing
    4. reaction continues to occur in both the directions.
48. Disorder NOT caused by protein deficiency:
    1. Weight loss
    2. Muscle fatigue
    3. Loss of strength
    4. Constipation
49. What is the sheilding effect?
    1. increase in nuclear charge
    2. decrease in atomic size
    3. reduction in force
    4. increase in ionization energy
50. Which isotopes is commonly used to irradiate cancer cell.
    1. Iodine -123
    2. Carbon -14
    3. Cobalt-60
    4. Iodine-131
51. Macroscopic properties are properties that can be visualized by:
    1. the naked eye
    2. microscope
    3. electron microscope
    4. telescope
52. Electrons of alkali metals excite by absorbing the light in:
    1. Visible wavelength
    2. UV wavelength
    3. IR wavelength
    4. Radio wavelength
53. Volume of liquid in cylinder is:
    1. 23
    2. 24
    3. 25
    4. 22
54. Silver tarnish in the presence of:
    1. SO₂
    2. H₂S
    3. Both a and b
    4. None of these
55. Which is reddish brown gas?
    1. NO
    2. NO₂
    3. SO₂
    4. O₃
56. A catalyst increases the rate of a chemical reaction by:
    1. increasing activation energy
    2. increasing the enthalpy of reaction
    3. Decreasing the enthalpy of reaction
    4. None of these
57. Which molecule contains a carbon–carbon single bond?
    1. Ethane
    2. Ethene
    3. Ethyne
    4. Methanol
58. The functional group is found in:
    1. Alcohols
    2. Ketones
    3. Carboxylic acids
    4. Esters
59. What harmfull substances can wastewater carry?
    1. only minerals
    2. pathogens,bacteria
    3. pure water
    4. oxygen
60. What is the formula mass of CuSO₄·5H₂O?
    1. 159.5
    2. 185.5
    3. 249.5
    4. 149.5