10th Class Chemistry Board Pattern Paper 2026

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. Vitamin C supports:
   1. Digestion
   2. Collagen synthesis and immunity
   3. Red blood cells
   4. Hormone regulation
2. The formula of ethyne is:
   1. C₂H₆
   2. C₂H₂
   3. C₂H₄
   4. C₂H₈
3. In Baeyer’s test, saturated hydrocarbons show:
   1. No reaction
   2. Colourless solution
   3. Formation of precipitate
   4. Blue colouration
4. What does a small standard error (e.g., 0.1°C) show?
   1. That the value is uncertain
   2. That the average value is accurate
   3. That data is not useful
   4. That the experiment should be redone
5. Which insoluble base reacts with H₂SO₄ to produce copper(II) sulphate?
   1. CaCO₃
   2. CuO
   3. NaOH
   4. Zn
6. Which of the following represents Avogadro’s law?
   1. V ∝ n
   2. V ∝ P
   3. V ∝ T
   4. PV = constant
7. One mole of $H_2O$ has a mass of:
   1. 10 g
   2. 18 g
   3. 16 g
   4. 23 g
8. Which of the following best defines polymers?
   1. Small molecules bonded together to form large molecules
   2. Large molecules built up from many smaller molecules called monomers
   3. Simple molecules consisting of one type of atom
   4. Large molecules made up of metals and non-metals
9. Which of the following is an example of a carboxylic acid?
   1. Ethanol
   2. Ethanoic acid
   3. Ethyl acetate
   4. Methanol
10. Alcohol swabs are commonly used to disinfect the skin:
    1. After meals
    2. Before injection or surgery
    3. During exercise
    4. For cosmetic use only
11. Which of the following is NOT a factor affecting the rate of reaction according to collision theory?
    1. Number of particles per unit volume
    2. Activation energy
    3. Presence of a catalyst
    4. Molar mass of reactants
12. Which of the following does not involve an electrolytic process?
    1. Refining of copper
    2. Manufacture of Sodium from NaCl
    3. Electroplating of steel
    4. Reduction of metal oxide by a reducing agent.