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Q: In a shrinkage limit experiment, mercury is used for:
  • A. prevent shrinkage of soil
  • B. fill the voids of soil sample
  • C. determine volume at plastic limit
  • D. determine dry volume of soil
Correct Answer: Option D - The mercury level device is an important component of the shrinkage limit apparatus. • It is used to measure the volume change of the soil specimen during drying. • The device consist of a graduated glass tube filled with mercury. • The soil specimen is placed in the shrinkage dish and covered with mercury.
D. The mercury level device is an important component of the shrinkage limit apparatus. • It is used to measure the volume change of the soil specimen during drying. • The device consist of a graduated glass tube filled with mercury. • The soil specimen is placed in the shrinkage dish and covered with mercury.

Explanations:

The mercury level device is an important component of the shrinkage limit apparatus. • It is used to measure the volume change of the soil specimen during drying. • The device consist of a graduated glass tube filled with mercury. • The soil specimen is placed in the shrinkage dish and covered with mercury.