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What is the principle behind the kraut's test for lipids?
The principle behind the Kraut's test for lipids is that lipids form a white emulsion when shaken with sulfuric acid due to the formation of glycerol and fatty acids. The appearance of a white emulsion indicates the presence of lipids in the test sample.
What is colour of cobalt oxide in borax bead test?
Cobalt oxide typically appears as a blue color in the borax bead test.
What is the principle behind alkaloidal test?
The principle behind alkaloidal tests is based on the ability of alkaloids to form specific chemical reactions or complexes when exposed to certain reagents. These reactions can help in identifying the presence of alkaloids in a given sample by producing characteristic color changes or precipitation. Common alkaloidal tests include Dragendorff's test, Mayer's test, and Wagner's test.
What is the chemical equation for flame test for borax?
The chemical equation for the flame test for borax is: Na2B4O7·10H2O (borax) + heat → Na2O (sodium oxide) + B2O3 (boron trioxide) + H2O (water) + light emissions (color changes in flame)
What is the best destructive test for showing lack of side wall fusion with a 25mm thick butt weld?
The best destructive test for showing lack of sidewall fusion in a 25mm thick butt weld is the macro-etch test. This test involves cutting a cross-section of the weld, polishing it, and then etching it with a chemical solution to reveal any internal defects, such as lack of sidewall fusion or incomplete penetration. The macro-etch test provides a clear visual indication of discontinuities within the weld.
What is the principle behind the kraut's test for lipids?
The principle behind the Kraut's test for lipids is that lipids form a white emulsion when shaken with sulfuric acid due to the formation of glycerol and fatty acids. The appearance of a white emulsion indicates the presence of lipids in the test sample.
What is the borax test of anthraquinons?
The borax test for anthraquinones involves mixing a sample with borax and heating it to produce a colored solution. The presence of anthraquinones is indicated by the color change in the solution. This test is commonly used to detect the presence of anthraquinones in organic compounds.
What is colour of cobalt oxide in borax bead test?
Cobalt oxide typically appears as a blue color in the borax bead test.
How about borax bead test?
The borax bead test is a qualitative analytical test used to identify certain metallic ions based on the color of the borax bead after heating with the sample. The test involves melting a small amount of borax with the sample on a platinum wire loop and observing the color of the resulting borax bead under a flame. Different metal ions produce distinct colored beads, aiding in their identification.
What is the principle behind alkaloidal test?
The principle behind alkaloidal tests is based on the ability of alkaloids to form specific chemical reactions or complexes when exposed to certain reagents. These reactions can help in identifying the presence of alkaloids in a given sample by producing characteristic color changes or precipitation. Common alkaloidal tests include Dragendorff's test, Mayer's test, and Wagner's test.
Who does not respond to borax bead test?
Alkali metals such as sodium, potassium, and lithium typically do not respond to the borax bead test. This is because their complexes with boron are colorless and difficult to detect.
What is the chemical equation for flame test for borax?
The chemical equation for the flame test for borax is: Na2B4O7·10H2O (borax) + heat → Na2O (sodium oxide) + B2O3 (boron trioxide) + H2O (water) + light emissions (color changes in flame)
What is the principle behind the shinoda test for flavonoids?
In the Shinoda test for flavonoids, a sample is added to pieces of magnesium and then hydrochloric acid is dripped on the sample. The color the sample turns indicates if there are flavonoids present or not.
Principle of widal test?
same principle for latex methd
Why only colorless substance give borax bead test?
Tom's bald head.
What is the principle behind salkowski test?
a test for cholesterol. When concentrated sulfuric acid is added to a chloroform solution of cholesterol, the chloroform layer shows a red to blue colour and the acid layer shows a green fluorescence. [After Ernst Leopold Salkowski (1844 - 1923), German physiological chemist.]
How much borax is needed to raise pH?
To raise pH using borax, you can add 1 tablespoon of borax per 10,000 gallons of water to increase pH by approximately 0.3 units. It's important to gradually add small amounts of borax and test the pH frequently to avoid overshooting your target pH level.
