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Q: Which is the test usually carried out on sandstones and cannot be applied to limestone naturally?
  • A. Crushing test
  • B. Crystallization test
  • C. Acid test
  • D. Attrition test
Correct Answer: Option C - Acid test–In this test, a stone is kept for one week in the solution of sulphuric acid and hydrochloric acid having 1% strength. The corners of stones which have high alkaline content turn roundish and loose particles will get deposited on its surface. • Such types of stones are unsuitable for smoky atmosphere. • The stones having percentage of lime content exhibit efflorescence when subjected to action of acids. • It is natural that this test cannot be apply to the limestone and usually carry out on the sandstones.
C. Acid test–In this test, a stone is kept for one week in the solution of sulphuric acid and hydrochloric acid having 1% strength. The corners of stones which have high alkaline content turn roundish and loose particles will get deposited on its surface. • Such types of stones are unsuitable for smoky atmosphere. • The stones having percentage of lime content exhibit efflorescence when subjected to action of acids. • It is natural that this test cannot be apply to the limestone and usually carry out on the sandstones.

Explanations:

Acid test–In this test, a stone is kept for one week in the solution of sulphuric acid and hydrochloric acid having 1% strength. The corners of stones which have high alkaline content turn roundish and loose particles will get deposited on its surface. • Such types of stones are unsuitable for smoky atmosphere. • The stones having percentage of lime content exhibit efflorescence when subjected to action of acids. • It is natural that this test cannot be apply to the limestone and usually carry out on the sandstones.