Past Paper 2025 Lahore Board Inter Part II Chemistry Group I Objective

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Chemistry Inter Part-II, 2025 Lahore Board Group – I
Time: 20 Min. Objective Type Marks : 17

Note:

Four possible answers A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink in the answer book. Cutting or filling two or more circles will result in zero mark in that question.

1.1 Chlorine heptaoxide (Cl₂O₇) reacts with water to form:

  • Ⓐ Hypochlorous acid
  • Ⓑ Chloric acid
  • Ⓒ Perchloric acid
  • Ⓓ Chlorine and oxygen

2 Which of the following acid can be used as a catalyst in Friedel-Crafts reactions:

  • Ⓐ AlCl₃
  • Ⓑ HNO₃
  • Ⓒ H₂SO₄
  • Ⓓ HCl

3 The fibre which is made from acrylonitrile as monomer:

  • Ⓐ PVC
  • Ⓑ Rayon fibre
  • Ⓒ Acrylic fibre
  • Ⓓ Polyester fibre

4 Ozone layer is found in:

  • Ⓐ Troposphere
  • Ⓑ Stratosphere
  • Ⓒ Hydrosphere
  • Ⓓ Lithosphere

5 Mark the correct statement:

  • Ⓐ Na⁺ is smaller than Na atom
  • Ⓑ Na⁺ is larger than Na atom
  • Ⓒ Cl⁻ is smaller than Cl atom
  • Ⓓ Cl⁻ and Cl atom are equal in size

6 Cannizzaro's reaction is not given by:

  • Ⓐ Formaldehyde
  • Ⓑ Acetaldehyde
  • Ⓒ Benzaldehyde
  • Ⓓ Trimethyl acetaldehyde

7 Boric acid cannot be used:

  • Ⓐ As antiseptic in medicine
  • Ⓑ For washing eyes
  • Ⓒ in soda bottles
  • Ⓓ For enamels and glazes

8 Which compound will have maximum repulsion with H₂O:

  • Ⓐ C₆H₆
  • Ⓑ C₂H₅OH
  • Ⓒ CH₃CH₂CH₂OH
  • Ⓓ CH₃–O–CH₃

9 Ecosystem is a smaller unit of:

  • Ⓐ Lithosphere
  • Ⓑ Hydrosphere
  • Ⓒ Atmosphere
  • Ⓓ Biosphere

10 The state of hybridization of carbon atom in methane is:

  • Ⓐ sp³
  • Ⓑ sp²
  • Ⓒ sp
  • Ⓓ dsp²

11 Which ion will have maximum value of heat of hydration:

  • Ⓐ Na⁺
  • Ⓑ Cs⁺²
  • Ⓒ Ba⁺²
  • Ⓓ Mg⁺²

12 Formula of chloroform is:

  • Ⓐ CH₃Cl
  • Ⓑ CCl₄
  • Ⓒ CH₂Cl₂
  • Ⓓ CHCl₃

13 The strength of binding energy of transition elements depends upon:

  • Ⓐ Number of electron pairs
  • Ⓑ Number of unpaired electrons
  • Ⓒ Number of neutrons
  • Ⓓ Number of protons

14 Elimination bimolecular reaction involves:

  • Ⓐ First order kinetics
  • Ⓑ Second order kinetics
  • Ⓒ Third order kinetics
  • Ⓓ Zero order kinetics

15 The brown gas formed, when metal reduce HNO₃ to:

  • Ⓐ N₂O₅
  • Ⓑ N₂O₃
  • Ⓒ NO
  • Ⓓ NO₂

16 A carboxylic acid contains:

  • Ⓐ A hydroxyl group
  • Ⓑ A carboxyl group
  • Ⓒ A hydroxyl and carboxyl group
  • Ⓓ A carboxyl and an aldehydic group

17 Which three elements are needed for the healthy growth of plants:

  • Ⓐ N,S,P
  • Ⓑ N,Ca,P
  • Ⓒ N,P,K
  • Ⓓ N,K,C

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