[Solved] The most commonly used indicator in laboratories is ________ (2024)

FAQs

Which is the most commonly used indicator in laboratory? ›

The most commonly used indicator in the laboratory is universal indicator. A universal indicator is a pH indicator which shows a pH value ranging from 1 to 14 to indicate the acidity or alkalinity of any solution.

Litmus indicator, pH paper, methyl orange ,phenolphthalein etc. are the few common indicators used in laboratories . Q.

Litmus is the most commonly used natural chemical indicator. It is the solution of different types of dyes naturally obtained from lichens.

Quality indicators are metrics used to define and measure progress in improving the quality of laboratory services. Key quality indicators are chosen because each one gives a unique viewpoint of the structure and processes of the laboratory.

(a) An indicator is a 'dye' that changes colour when it is put in an acid or a base. The three most common indicators are: Litmus, Methyl orange and Phenolphthalein. (b) The acid-base indicator extracted from lichen is Litmus. (c) Turmeric paper turns red when put in an alkaline solution.

The most commonly used natural indicator is litmus. It is extracted from lichens (Fig. 5.1). It has a mauve (purple) colour in distilled water.

Indicators are substances which show whether the substance tested is basic or acidic. Q. Q. You are given two test tubes A and B, containing two different solution,one of them is an acidic solution and the other one is a basic solution.

noun. : a sensitive gauge (as a dial gauge) combined with an adjustable mount for testing the accuracy of machined work.

Litmus: Litmus paper is filter paper that has been treated with soluble natural dyes provided by lichens. Litmus paper is a piece of paper that produces results that can be used as a pH indicator.

Litmus, phenolphthalein and methyl orange are the common acid-base indicators.

What is the most common universal indicator? ›

Solution: The main components of a universal indicator, in the form of a solution, are thymol blue, methyl red, bromothymol blue, and phenolphthalein. This mixture is important because each component loses or gains protons depending upon the acidity or alkalinity of the solution being tested.

In order to make the most out of indicators, they should be “SMART” (Specific, Measurable, Attainable, Relevant, and Time-Bound) and establish a point of reference, targets, and frequency of data collection for effective program monitoring and evaluation.

Universal indicator and the pH scale

It is a mixture of several different indicators. Unlike litmus, universal indicator can show us how strongly acidic or alkaline a solution is, not just that the solution is acidic or alkaline. This is measured using the pH scale.

Types of Indicators

Artificial and Natural indicators are the main two types of Chemical indicators. Another type of indicator includes Olfactory indicators. Litmus, red cabbage, turmeric, china rose are a number of the present indicators around us.

Among all, the common indicators are as follows; litmus, china rose, turmeric and phenolphthalein. (b) The acid-base indicator which is extracted from lichen is litmus. Litmus can be used as a litmus solution or litmus paper.

The two common indicators used in acid-base titration is Phenolphthalein and methyl orange.