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Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction ? 1. Number of stress cycles 2. The frequency, and amplitude of vibration of waves generated by an earthquake 3. Characteristics of sand 4. Relative density Select the correct answer using the codes given below :

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Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction ? 1. Number of stress cycles 2. The frequency, and amplitude of vibration of waves generated by an earthquake 3. Characteristics of sand 4. Relative density Select the correct answer using the codes given below : Answer: 1, 2, 3 and 4

Question context

This question is part of 🚧 Civil Engineering within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.