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Add to word list. a test to find out if a substance is acid or alkaline. [ usually singular ] someone's decision or opinion about something that suggests what they think about a wider range of related things: litmus test of The president's policy on abortion is regarded as a litmus test of his views on women's rights.
Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. In an acidic medium, blue litmus paper turns red, while in a basic or alkaline medium, red litmus paper turns blue.
2013年5月17日 · The meaning of LITMUS TEST is a test in which a single factor (such as an attitude, event, or fact) is decisive. How to use litmus test in a sentence. Litmus Test Has Scientific Origins.
2021年1月20日 · The litmus test tells whether a liquid or gas is acidic, neutral, or basic. It indicates whether the substance is pH 4.5 or lower, between 4.5 and 8.3, or 8.3 or higher. The litmus test does not accurately gauge pH — it only tells if the sample is acidic, neutral, or basic. Litmus Test for Liquids.
石蕊測試，酸堿測試. [ usually singular ] someone's decision or opinion about something that suggests what they think about a wider range of related things. （具有更廣泛意義的）決定，意見. The president's policy on abortion is regarded as a litmus test of his views on women's rights.總統在墮胎問題上所採取的政策表明他對女性權利的總體看法。 (litmus test在劍橋英語-中文（繁體）詞典的翻譯 © Cambridge University Press)
someone's decision or opinion about something that suggests what they think about a wider range of related things: litmus test of The president's policy on abortion is regarded as a litmus test of his views on women's rights. Compare. acid test. SMART Vocabulary: related words and phrases. Scientific techniques. anatomize. anti-vivisection.
2023年12月22日 · Last Updated: December 22, 2023 Fact Checked. Performing a litmus test is one of the oldest and simplest methods of determining the acidity or alkalinity of a solution. Litmus paper is made when a piece of thin paper is coated by organic dyes that are sensitive to changes in pH.
2020年2月11日 · The litmus test is a quick method of determining whether a liquid or gaseous solution is acidic or basic (alkaline). The test can be performed using litmus paper or an aqueous solution containing litmus dye. Initially, litmus paper is either red or blue. The blue paper changes to red, indicating acidity somewhere between the pH range of 4.5 to 8.3.
LITMUS TEST meaning: something (such as an opinion about a political or moral issue) that is used to make a judgment about whether someone or something is acceptable.
Litmus solution helps us identify solutions as acidic, basic, or neutral. Created by Ram Prakash. Questions. Tips & Thanks. Want to join the conversation? Log in. Sort by: Top Voted. V. 4 years ago. Can we differentiate between the bases and the neutral solution not by using the red litmus or any indicator? if yes, how? •. ( 6 votes) Upvote.
