
1) Chemical moment of truth 2) Chemical test 3) Chemistry exam 4) Conclusive examination 5) Conclusive trial 6) Critical evaluation 7) Critical step 8) Critical step in analysis 9) Crucial challenge 10) Crucial trial 11) Decisive appraisal 12) Decisive assessment 13) Decisive experiment 14) Decisive proof
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https://www.crosswordclues.com/clue/acid-test
[gold] An acid test is any qualitative chemical or metallurgical assay which uses acid; most commonly, and historically, the use of a strong acid to distinguish gold from base metals. Figuratively, acid test is any definitive test for some attribute, e.g. of a person`s character, or of the performance of some product. ==Chemistry== Testing ...
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http://en.wikipedia.org/wiki/Acid_test_(gold)

Acid test:
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http://www.encyclo.co.uk/local/20425

(In topic `Middleware & EAI`) The ACID test is the term applied to the four criteria (Atomicity, Consistency, Isolation & Durability) for transactional integrity.
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http://www.encyclo.co.uk/local/20477

Procedure performed to help identify a mineral. Certain acids (usually hydrochloric acid and nitric acid) are placed in contact with the mineral or its powder, and, depending on the mineral, it dissolves, effervesces, or remains inactive.
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http://www.encyclo.co.uk/local/22291

A financial ratio which is similar to the current ratio, but more stringent. It is defined... <a target=_blank href='http://www.finance-glossary.com/terms/acid-test.htm?id=16&ginPtrCode=00000&PopupMode=false' title='Read full definition of acid test'>more</a>
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A liquidity measure that compares a business's most liquid current assets to total current liabilities (cash & equivalents + receivables / total current liabilities). It is also known as the quick ratio because cash and debtors are regarded as 'quick assets', ie, they are cash or near cash.
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http://www.ft.com/Common/HelpPages/tools.help.glossarya.html

[
n] - a rigorous or crucial appraisal
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http://www.webdictionary.co.uk/definition.php?query=acid%20test

acid test A decisive test that establishes the worth or credibility of something (from the use of nitric acid to test gold).
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http://www.wordinfo.info/words/index/info/view_unit/2369/3
noun a rigorous or crucial appraisal
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https://www.encyclo.co.uk/local/20974

A means of determining the fineness of gold through the use of nitric acid and aqua regia.
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https://www.encyclo.co.uk/local/22697

a severe and conclusive test to establish quality, genuineness, worth, etc.
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https://www.infoplease.com/dictionary/acid-test
No exact match found.